Should existing structures build from CCA-treated wood be removed?

Answers

Answer 1
Chromated copper arsenate, or CCA, is a pesticide that has been used for years in pressure-treating lumber to prevent destruction from rot and insects. Arsenic, a toxic chemical, can leach from this treated wood, leaving residues on the wood’s surface and in nearby soil. Young children who play on or near decks or playscapes made from CCA- treated wood can get arsenic on their skin and into their bodies, especially if they eat or drink without washing their hands. Because of the health risks of long-term exposure to arsenic, the Environmental Protection Agency (EPA) has announced that as of December 31, 2003, arsenic Currently the EPA does not recommend that people remove existing structures made with CCA-treated wood or the soil surrounding those structures. However, they do recommend that people reduce their potential exposure to arsenic.

Related Questions

What is







































apenisinhermouth

Answers

you got me i litteraly said it ot loud
Innings she dhjsns dhd

fill in the name of the processes such as freezing that are represented

Answers

a) melting (the passage from a crystal conformity to a liquid conformity because of more energy associated to its molecules)
b) boiling (the passage of a liquid to gas, usually by quick transition because of an increase of temperature)
c) freezing (when a liquid becomes solid by decrease of temperature, becoming a crystallised structure) 
d) condensation (the passage from gas to liquid, it requires cooling the gas making the particles closer forming a more solid fluid then a gas - a liquid)
Final answer:

These are names of processes linked to the changes in physical states and properties of matter. They include an isentropic process with no change in entropy, irreversible processes which cannot return the system or surroundings to an initial state, isothermal processes that operate at constant temperatures, isobaric and isochoric processes that maintain constant pressure and volume respectively.

Explanation:

The name of the processes such as freezing can be related to the ones annotated in the representation below.

Isentropic: This is a process that proceeds without any change in entropy. It's an ideal process that assumes perfect insulation, hence no exchange of heat with the surroundings.Irreversibility or Irreversible Process: These are processes that cannot return the system or the surroundings to its initial state. Heat transfer, free expansion, mixing of gases, and chemical reactions are examples.Isothermal Expansion or Isothermal Process: These are transformations that take place at a constant temperature. Gas expansion with heat addition is an example.Isobaric process: This is a thermodynamic process whereby the pressure remains constant.Isochoric process: A process during which the volume remains constant.

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What's the difference between primary succession and secondary succession

Answers

Primary succession occurs on newly exposed surfaces- it is an ecological change that begins in an area where no remnants of an older community

Secondary succession occurs in a disturbed area where remnants or previous ecosystems (coil and even plants) remain

Final answer:

The difference between primary and secondary succession is that primary succession occurs on newly formed land with no soil, requiring pioneer species to create soil, while secondary succession occurs on disturbed land with existing soil, allowing for faster recovery.

Explanation:

Ecological succession is the process where a community experiences a sequence of changes with the appearance and disappearance of species over time. The main difference between primary succession and secondary succession lies in the condition of the environment where the succession begins.

Primary succession occurs in areas where no soil exists because it's a newly formed or exposed environment, such as land formed from lava flow or locations where glaciers have retreated. Here, the environment is colonized by pioneer species which can grow in such harsh conditions and gradually create soil by breaking down rock and contributing organic matter as they die off.

In contrast, secondary succession happens in areas that were once home to existing life but were disturbed by events like wildfires or human activities. In these cases, soil is already present, and remnants of the destroyed community provide a basis for new growth. Succession in these situations tends to be faster than primary succession because the soil already contains nutrients needed for plant growth.

One active transport process that occurs in the electron transport process in the membrane of the _____________ is the transport of protons to produce a proton gradient to power the production of ATP.
A) chloroplast
B) mitochondria
C) nucleus
D) ribosome

Answers

It is B the mitochondria

What are 2 possible phenotypes for ear wax

Answers

Dont clean them your damaging your ears!!!!!!
Dry earwax and wet earwax

Which discovery did scientists make when they arranged elements in order of increasing atomic mass?



 
A.
a repeating pattern of properties


 
B.
a puzzling series of numbers


 
C.
alphabetical arrangement of the names of elements


 
D.
a complex code of patterns and relationships

Answers

The correct option is A.
When scientists arranged elements in order of increasing atomic mass, they discovered that some properties of these elements are repeated in a regular manner and this discovery was used to form the periodic table. For instance, you will notice that all the elements arranged in each group have similar chemical properties

Small pea seeds move around each other but do not bounce off. What state of matter is this?

Answers

The answer is C or liquid because liquid particles do not bonce off each other and liquids are Particles are loosely together  Indefinite shape and definite volume  Able to flow and Dan said "Small pea seeds move around each other but do not bounce off" so he is referring those small pees as molecules and he did say the pee seeds move around each other and bounce off and please correct me if am wrong and not to throw you under the bus lori0 but mullins is a town in south carolina

also can i have branlyest i never had it before

Answer:

liquid

Explanation:

can a graph be used to represent the results of an investigation.

Answers

If this a yes or no question than the correct answer is YES

Which of the following vertebrates had the chance to become abundant after the dinosaurs became extinct?

A. woolly moths
B. amphibians
C. mammals
D. reptiles

Please help!

Answers

I believe the answer is C.
because when the dinosaurs thrived they ate most of the mammals which were small animals but when the dinosaurs went extinct the mammals grew larger in size and started to thrive.

in which US state would you visit to meet Hyperion, the very tallest Redwood?

Answers

CALIFORNIA MAH DUDE (I need to add characters so I can post this)
One would have to visit the state of California to see the world's tallest tree. The tree is located in the world famous Sequoia Redwood Park. Sequoia redwoods can grow to be about 76 meters in height and can live to over 3000 years.The population was decimated in the 1800s as they were extensively logged. They are currently an endangered species and are a protected in the Sequoia National Forest. 

Chains of amino acids make___ which can join together to make a ____

Answers

chains of amino acids make polypeptides which can join together to make a protein
Final answer:

Amino acids form chains called peptides, which can join together to form polypeptides. When many amino acids are linked, or when multiple polypeptides combine, they form proteins. The characteristics of a protein are determined by the sequence and arrangement of amino acids in the chain.

Explanation:

Chains of amino acids form short chains called peptides. These peptides can join together to form longer chains, which are referred to as polypeptides. When the number of amino acids joined together becomes very large, or when multiple polypeptides are used as building subunits, the resulting macromolecules are known as proteins.

Each amino acid is attached to another amino acid by a covalent bond, known as a peptide bond, which is formed by dehydration synthesis. Dehydration synthesis in this context involves the carboxyl group of one amino acid combining with the amino group of another releasing a water molecule, hence the term dehydration. The process can continue, linking numerous amino acids together in a chain.

The sequence, number, and specifically the arrangement of these amino acids in the chain ultimately determines the protein's unique shape, size, and function.

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If a cell is placed in salt water water leaves the cell by

Answers

Osmosis

Hoped that helped 
Final answer:

When a cell is placed in saltwater, water leaves the cell through osmosis because of the higher solute concentration in the saltwater solution.

Explanation:

In a saltwater solution, a cell will lose water through a process called osmosis. Osmosis is the movement of water molecules from an area of lower solute concentration (inside the cell) to an area of higher solute concentration (in the saltwater solution). Since saltwater has a higher solute concentration than the cell, water will move out of the cell to achieve equilibrium.

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A researcher conducts a study to determine the effectiveness of a chemical at removing paint from a house’s siding. The researcher’s study shows that the chemical removes around 80 percent of the paint on the test samples. The researcher publishes her results. Several other scientists read about the experiment and repeat it in their own laboratories.

Why should the scientists repeat an experiment that has already been done?

A. The scientists are trying to claim the discovery as their own.
B. Scientists repeat experiments in order to prevent bias.
C. The scientists repeat the experiment because they think the researcher is lying.
D. Scientists repeat experiments in their spare time when they are bored.

Answers

The answer is B. Scientist repeat the experiments in order to prevent bias.

Brainlest answer is always appreciated!

when something accelerates then stops accelerating , what happens to the object?

Answers

The object continues to move in a straight line at the velocity it had when the acceleration stopped. Looking at Newton's laws of motion, you can see the acceleration and the subsequent motion covered by the 1st law. Newton's First Law: states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force. * The first law here indicates that as long as there isn't an external force, the object continues to move in a straight line at an uniform velocity. This is the situation when there is no more acceleration (external force).

which of the following is only found in plant cells?


A nucleus
B DNA
C ribosomes
D chloroplasts

Answers

i know its chloroplasts 
Chloroplasts, are found in plant cells rather than animal cells

how are humans activities disturbing carbon dioxide levels are affecting marine life

Answers

Answer:

The answer is "Increased carbon Dioxide levels have made the oceans more alkaline.

Explanation:

Google states "In the natural environment carbonate alkalinity tends to make up most of the total alkalinity due to the common occurrence and dissolution of carbonate rocks and presence of carbon dioxide in the atmosphere."

During science class, students were instructed to develop a dichotomous key (a tool that allows the user to determine the identity of items in the natural world) in order to classify organisms into one of the six kingdoms of life. Ms. King, their teacher, provided them with this diagram. According to the diagram, the BEST way to separate all living things into two main groups would be to consider A) method of reproduction. B) consumer versus producer. C) cell type, prokaryotic versus eukaryotic. D) organization, unicellular versus multicellular.

Answers

The answer to this question would be: C) cell type, prokaryotic versus eukaryotic. 

In six-kingdom classification, the cell type would be same for each kingdom. A kingdom should only have either prokaryotic or eukaryotic
 
A different method of reproduction needs an advanced organ and not all kingdom have it. Consumer/producer or unicellular/multicellular classification cant differentiate between the kingdom since one kingdom can have a member with those traits.
Answer to this question: cell type, prokaryotic versus eukaryotic.
make sure you give the other person brainliest

5. Based on your reading, what makes it so that you are able to literally walk on the ocean floor in the Bay of Fundy?

Answers

Based on the reading it makes me able to literally walk on the ocean floor in the Bay of Fundy is during high tide, the water levels are extremely high. But, during low tide, it is possible to walk on the ocean floor and look up at the rocks above.

How does asexual reproduction occur to budding

Answers

After cell division the new DNA will be pushed to side of cell where membrane will create a bid like structure in which pinches and asexually produced

4.   Which aquatic ecosystem typically forms along coastlines where fresh water and salt water meet, leading to varying degrees of salinity?

Answers

I would say estuary, because that's where a fresh water river and an ocean meet, and that leads to a transition between salt to fresh water.
i would also say estuary lfor this

What are two major events that happened in the Mesozic Era

Answers

Hello! Here are a couple of major events that happened in the Mesozoic Era.

1. The Mesozoic Era began with the largest mass extinction in history, killing off the vast majority of marine and terrestrial life on Earth.

2. After that mass extinction, the super continent Pangaea began to break off, and the dinosaurs began to flourish the Earth, although they were killed off at the end of the Mesozoic Era.

A student swings his keychain around in a circle. What is the source of the centripetal force for this action?

Answers

The source of the centripetal force for this action is tension

Hope that helps :)

Answer:

The correct answer will be- tension

Explanation:

Centripetal force is the force acting on the object moving in a circular path with direction towards the center. The centripetal force causes the object to follow a curved path.

Three forces together act on the string with key: Tension (a force acting on the key chain due to string), gravity (the downward force), and friction (resisting force). Out of these the main source of action of centripetal force is the "tension" applied by the string on the key-chain.

Thus, tension is the answer.

why do whales,giraffes, and humans all have seven vertebrae in their necks

Answers

So we can move our necks to different sides and ways. (I think)

which statement best describes the presidents role in the federal legislative process?

A- THE PRESIDENT MUST APPROVE BILLS BEFORE CONGRESS CAN VOTE ON THEM
B-THE PRESIDENT DETERMINES WHETHER TO SIGN OR VETO BILLS PASSED BY CONGRESS
C-THE PRESIDENT CAN ORDER A FILIBUSTER OF BILLS TO PREVENT A VOTE BY CONGRESS
D-THE PRESIDENT SETS THE RULES FOR FLOOR DEBATES ON BILLS PRESENTED TO CONGRESS

Answers

Answer;

B-The president determines whether to sign or veto bills passed by congress.

Explanation;The president's only role in the federal legislative process is to sign or veto the bills that are passed by the Congress.When the president signs a bill that has been passed by the congress it becomes a Law. On the other hand, if the presidents vetoes the bill then it goes back to the congress. The congress has power to override the veto by the president with a two-third votes by the two houses.However, the override by the congress are not common, and usually the presidential vetoes kills bills.

Answer:

The answer is B.

Explanation:

Help plz

1. The graph below depicts the frequency of expression of the coloration of beetles on an island:

Graph is the 1st Pic

Birds are the main predators of these beetles; they hunt the beetles by sight and pick them up off of the tree bark where they feed. A logging company clears the trees off of the island and plants younger trees as a replacement. Trees with light bark are planted on one side of the island and trees with dark bark are planted on the other side of the island. What do you predict would happen to the range of coloration in the populations of beetles on each side of the island? Select TWO answers, one to represent the beetles living on the light colored trees and one to represent the beetles living on the dark colored trees. (2 points)

A. graph 2 below
B. graph 3 below
C. graph 4 below
D. graph 5 below

Answers

the correct answer is graph c

Graph 3  represent the beetles living on the light colored trees and graph 5 represent the beetles living on the dark colored trees.

Options B and D are correct

How do we explain?

These beetles are likely to experience selective pressure favoring lighter coloration because lighter-colored beetles would be better camouflaged against the light bark, making them less visible to birds. Over time, natural selection may lead to an increase in the frequency of lighter-colored beetles in this population.

In the same way, beetles on the dark-colored trees may experience selective pressure favoring darker coloration. Darker-colored beetles would be better camouflaged against the dark bark, providing them with a better chance of avoiding bird predation. Over time, natural selection may lead to an increase in the frequency of darker-colored beetles in this population.

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Fluorine has an atomic number of 9. The n = 1 energy level has two electrons, and the n = 2 energy level has seven electrons. Flourine's valence is _____.

Answers

The answer will be -2

how do astronomers use the celestial sphere to plot a stars exact position

Answers

The celestial sphere is a coordinate system that uses the Earth as a reference. Declination indicates how far north or south from the celestial equator an object is. Right ascension indicates how far east or west from the vernal equinox an object is.

Any piece of data that can be used to support an assertion is

A)evidence.

B)a hypothesis.

C)a conclusion.

D)an observation.

Answers

An Evidence is any piece of data that can be used to support an assertion 
A.)evidence it says support

pls help with this question

Answers

I believe the answer is Single Ruler,  A Monarchy is rule by a King or Queen, and a Autocracy is rule by one person with Absolute Power, both a Monarchy and Autocracy are ruled by a single person. A Single Ruler. Hope you pass your Module 1 Standards Assessment!

The human body is an organism made up of cells, tissues, organs, and organ system. Here are examples of three types of muscle tissue that are made of very different cells. How can scientists determine what type of cells make up each of these three tissues?
A) By using a magnifying glass to observe each tissue.
B) By collecting the tissues of people who have died and making observations.
C) By dissecting the tissues and then making observations using a dissecting scope.
D) By placing samples of each tissue on a slide and viewing the slides using a microscope.

Answers

I would say A... But I am not 2 sure.
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