Answer:
These spheres are closely connected. For example, many birds (biosphere) fly through the air (atmosphere), while water (hydrosphere) often flows through the soil (lithosphere). In fact, the spheres are so closely connected that a change in one sphere often results in a change in one or more of the other spheres.
Explanation:
i hope this helped
Answer: someone plz help i need answer too
Explanation:
Answer:
Genetic drift decreases genetic diversity within a population.
Explanation:
Genetic drift decreases genetic diversity within a population. It is a change in allele frequencies due entirely to random chance and is more likely to affect smaller populations than large ones. Population bottlenecks can lead to genetic drift.
Answer:
1. A
2. B (although technically it is the pulmonary artery)
3. E
4. C
5. D
Explanation:
Answer:
The rungs of the ladder are pairs of 4 types of nitrogen bases. Two of the bases are purines- adenine and guanine. The pyrimidines are thymine and cytosine.