BIOLOGY HIGH SCHOOL

Carbon dioxide is released through __________.a. Burning of forests
c. combustion of fossil fuels
b. Respiration
d. all of the above

Answers

Answer 1
Answer: The answer is D. All of the above. 
Answer 2
Answer: D. all of the above is the answer

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A teacher performs a demonstration of cellular transport by placing a raisin in pure water. After 24 hours, the students check the raisin and find that it has swollen and has a greater mass than before it was placed in the water.

Answers

Answer:

Explanation: it will swell after 24 hrs

The genetic code is based on sequences of three bases called

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The discoverers of DNA were not James D Watson and Francis Crick. They are the first scientist to formulate an accurate description of the DNA’s (deoxyribonucleic acid) complex , double-helical structure. They discovered that base pairing nucleotides must be; adenine and thymine; and cytosine and guanine. These base pairs are held together by a hydrogen bond, atype of chemical reaction that s easy to break and easy to reform. The statement is “DNA is a double helix made of two strands linked together with hydrogen bonds.”

The answer is: codons.

How much oxygen is contained in the atmosphere?a. 20%
b. 21%
c. 22%
d. 23%

What is slowed when water is a limiting factor in an environment?
a. amount of evaporation
b. population growth
c. the types of rocks

Answers

Oxygen makes up 20% of the atmosphere while nitrogen makes up 78%. The other two percent is made up of other gases. Population growth would slow. Organisms need water to survive and if there is a limited amount of water, populations will decline. 

Which of the following is the best example of a way human lifestyles affect environmental systems?Burning fossil fuels increases the amount of greenhouse gases in the atmosphere.
Using radioactive materials causes ground pollution when chlorofluorocarbons (CFCs) seep into the ground.
Deforestation causes water pollution by decreasing water vapor in nearby lakes and rivers.
Using aerosol sprays increases the amount of ozone (O3) in the atmosphere.

Answers

The first one is the best example because fossil fuels are very scarce on earth and cannot be replaced burning them increases greenhouse gasses such as (carbon dioxide - CO2, water vapor and methane) when these are released into the environment they lead to global warming. One is the answer because it is directly caused by humans and how they live and directly affects the environment.

The best example of a way human lifestyles affect environmental systems is that burning fossil fuels increases the amount of greenhousegases in the atmosphere.

WHAT IS POLLUTION

  • Pollution is the release of toxic or harmful substances into the environment. These toxic substances can either be released into the air, water or land.

  • Anthropogenic activities i.e. human activities can be a source of pollution to the environment.

  • Fossil fuels include petrol, kerosene etc. and when burnt via the use of automobiles can release greenhouse gases like CO2, SO2 into the atmosphere causing global warming.

Therefore, the best example of a way human lifestyles affect environmental systems is that burningfossil fuels increases the amount of greenhouse gases in the atmosphere.

Learn more about pollution at: brainly.com/question/1578512

How is a raft different from a typical ecosystem when considering carrying capacity?

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Answer:

In the simplest method of integrated aquaculture, rafts of alternating seaweed ropes and mussel ropes are suspended vertically from a ...

What is one frequent drawback of damming rivers?

Answers

floods (when it rains a lot, rivers tend to keep rising which leads to flooding )
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