Phytoplankton are only found at the surface of ocean waters because
a. they feed on tiny organisms living at the surface.
b. they are an important food source to surface-dwelling marine organisms.
c. they require sunlight to carry out photosynthesis.
d. they cannot withstand the colder temperatures of deep water.

What do scientists need to look at before developing an argument

Scenario #2 in 2001, a population of 2,500 poison dart frogs lived in the amazon rain forest. due to increased deforestation, the population dwindled to 25 frogs in 2019. new government regulations were enacted in 2022, successfully putting an end to the deforestation of the amazon rain forest. once deforestation was stopped, the poison dart frog population was able to recover. by 2050, the population reached 8,000 frogs, of that population, 20 are homozygous recessive for being spotted (ss genotype). q2- ? q- p- p2- 2pq-

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone