How much time does it take to develop a new species?

What are the two substances that may be formed in anaerobic respiration?

Which of the following is NOT a biological environment factor? symbiosis competition predation none of the above

Why is photosynthesis considered a bridge between the nonliving and living worlds?

2. In which phase of meiosis will sister chromatids separate and move to opposite ends of the cell? A. Anaphase I B. Anaphase II C. Prophase II D. Telophase I

Describe a similarity and a difference between meiosis I and meiosis II

Which population is limited by density-dependent factors? (a) A deer population is reduced as a result of a forest fire. (b) A population of rams is decimated by an earthquake. (c) A local wolf population experiences a lethal epidemic of parvovirus.

Which statement correctly explains how recombination increases genetic variation

In an island ecosystem, a species of beetle feeds on the leaves of a shrubby plant. A species of songbird preys on the beetle species. A hawk species hunts the songbirds for food.

which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment

Which of the following is a growing threat to animals