Answer:
Scientists have determined that humans are disrupting the nitrogen cycle by altering the amount of nitrogen that is stored in the biosphere. The chief culprit is fossil fuel combustion, which releases nitric oxides into the air that combine with other elements to form smog and acid rain.
Explanation:
Answer:
In all of these the carrying capacity would go down substantially
Explanation:
This is because these natural disasters are very detrimental to the environments and would decrease life.
Answer:
A
Explanation:
in DNA there is complementary base pairing which is that Adenine always pairs with Thymine and Cytosine always pairs with Guanine. therefore, if there is a certain amount of adenine in the DNA it must have the same amount of its complementary base, thymine.
the answer cannot be b as cytosine and thymine are not complementary base pairs. although b can coincidently be correct- that the amount of cytosine and thymine are equal- the question states that it must always be true. the answer cannot be c as ribose is found in RNA and deoxribose is found in DNA.
Again, What Brainlys said, D.
Fossils records provide evidence about the history of life on Earth including how organisms have changed over time. It tells about the structures of ancient organisms, their environment, and the way they lived. However, fossils can not usually provide information about soft tissues of an organism because soft tissues rarely become fossilized. Additionally, fossils rarely provide information about interactions among organisms and therefore tell us little about animal behavior.