Answer:
b and d btw are you taking an exam? Or test?
Explanation:
Gradual changes in the frequency of diseases over long periods are known as SECULAR TIME TRENDS. For example, the rate of mortality in USA due to coronary heart diseases over a period of time. Onset of puberty in girls is also a secular time trend.
Secular time trend is also referred as Secular Variation and Secular Drift.
Answer: The base pairing in the DNA molecule is incorrect.
This is because adenine (A) always pairs with thymine (T) and guanine (G) always pairs with cytosine (C).
Answer:
all things are made of atoms
Explanation:
atoms are the building blocks of life you are made of atoms.
I would say that the answer is D.