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

Which of the forest management practices keeps the florist in a state of mid to late succession

Many of Earth's nonrenewable resources are very rare. Other nonrenewable resources, such as coal, are abundant but not easily replaced. What would happen if we used up all the coal on Earth? A. It is impossible to use all the coal in the world. B.

Which abiotic factor changes as succession progresses? Tree species, wind currents, light intensity, or size of plants?

A situation in which both alleles for a trait are expressed in a heterozygous offspring is called

How does climate affect ecosystems and the life within them?

Glucose is the primary fuel for cellular respiration. Which molecules can also be used by cellular respiration to generate atp?

Cytochalasin d is a drug that prevents actin polymerization. A cell treated with cytochalasin d will still be able to

Why do the cells of the hypothalamus are likely to have high numbers of ribosomes?

At which synapse in the knee-extension reflex would you expect to find an inhibitory postsynaptic potential (IPSP) ? a. the synapse between the sensory neuron and the interneuron b.

Mendel hypothesized that gametes have only one factor or allele for each inherited trait. This hypothesis is supported by the observation that A) diploid cells are produce by meiosis. B) haploid cells are produced by meiosis.