Which statement best defines biodiversity?

a) the total number of different species in an area

b) the number of communities in an ecosystem

c) the number of tropic levels in a food web

d) the total size of a population of a single species

In the alternation of generations life cycle the diploid zygote grows into a sporophyte plant through a process called a. reproduction. b. fertilization. c. meiosis. d. mitosis.

1. What's the name for excessive bodily hair growth in women? 2. How many bones are there in a giraffe's neck? 3. Which male animal becomes pregnant, rather than the female?

What is the word for - all the organisms living in an area and the nonliving features of the environment?

Amino acids are related to proteins the same way that

During pregnancy, felicia has been extra careful to avoid foods that could potentially cause food-borne illness.

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.