Answer:
Without naturally occurring greenhouse gases, Earth's average temperaturewould be near 0°F (or-18°C) instead of the much warmer 59°F (15°C). The concentration of greenhouse gases, especially carbon dioxide and methane, has fluctuated naturallyover geological time scales.
Answer:
The answer is D because it is the only example that takes place over a long period of time.
Explanation:
it involves negative feedback loop
Explanation:
the loop allows living organisms to maintain homeostasis
The answer is A: The rough ER has visible ribosomes.
Because each parent contributes to their child 23 chromosomes, so therefore each parent gives their child half of the DNA of the child.
It wouldn't be 30% or 70% because the balance of the chromosomes the parents contribute is always equal.