Question

question 3 of 10
which is a reason that many organisms that have existed on earth have left no fossils?

a. fossils can only form near volcanoes.

b. fossils decay according to their half - life.

c. fossils cannot form underwater.

d. many organisms live only in rainforests.

Explanation:

• Option A: Fossils can form in various environments, not just near volcanoes. So A is incorrect.
• Option B: Fossils don't decay according to half - life (half - life is for radioactive substances). So B is incorrect.
• Option C: Fossils can form underwater (e.g., marine fossils). So C is incorrect.
• Option D: Rainforests have high humidity and rapid decomposition, which makes fossilization difficult. So many organisms in rainforests may leave no fossils.

Answer:

D. Many organisms live only in rainforests.