A person who's resting heart rate is 55 and after exercise, his heart rate is 160, is said to have a well developed heart muscle. Why is this so?

Most of the earth's surface is covered with A) land. B) polar ice. C) salt water D) fresh water.

How are baby's made

Both of Brian's parents are deaf, and he is deaf also. American Sign Language is the primary language of communication in Brian's home. Vladimir and his family live in Russia, and their primary language is Russian.

What are cells that express the same genes? A. The same B. Differentiated C. Mutated D. Not living

A) Two wavy haired people (one male and one female) have eight children. Of these eight, how many would you expect to be curly haired, how many wavy haired, and how many straight haired, assuming that the family follows the expected statistically

If an amino acid has a side chain (r group) that is charged (i. e. bears a full + or - charge), which amino acid group would it belong in?

If an object with a mass of 100 kg on earth is taken to a planet that has more gravity, how will this affect the object's mass and weight?

Lamarck's mechanism of change can be called

What is carrying capacity and what does it mean for ecosystems?

Why was the evolution of a coelom a critically important innovation for animals? a) The coelom can act as a hydrostatic skeleton. b) The coelom gives rise to a complex nervous system. c) The coelom made it possible for animals to colonize land.