A parent isotope has a half life of 1 million years. If a rock contained 20 mg of the parent isotope when it formed, how much parent isotope would be left after 2 million years?

Difference between response and adaption

What does the term natural selection mean

Marquis is using a balance to measure the mass of a rock. After recording a reading, he removes the rock, clears the balance, and measures the rock again using the same balance. He repeats this process two more times.

What is a factor that affects the outcome of an experiment

What is the connection between nucleic acids and chromosomes

What would you expect to happen if sea otters were removed from this food web? Check all that apply. The population of elephant seals would decrease. The population of kelp crabs would increase. The population of kelp would increase.

When blockages in the bloodstream read the Brian it can cause blank?

A gazelle is born with slightly longer legs which allow it to run faster than the other gazelles in the herd. This adaptation came may have come about because a. the gazelle needed to be able to run faster. b.

In a population of deer mice, the allele for white hair is recessive and the allele for brown hair is dominant.

What makes a molecule a saturated fat?