Classifications today are made on the basis of ...

A. The flower of plants

B. Ways that animals reproduce

C. Likenesses

D. Similarities and differences

Urgent: taking a quiz!

A chicken cell undergoes meiosis. How many chromosomes are in each cell?

How do tornadoes form.

Choose the three best explanations for why Mrs. H's alveoli might collapse if she does not do her deep breathing with the Incentive spirometer. A) The alveoli are lined with water, and attraction between the water molecules pulls them together.

Never mind wrong print

What kind of graph is a food web?

Many people in the developing world who depend on rice in their diet suffer from diseases related to deficiencies of

Why does biology have to be a subject

Differential reproduction of genotypes leads to evolution via what process? inbreeding natural selection genetic rescue genetic drift mutational load

Why is carbon essential to all known life on Earth?

Why are only inherited traits involved in the process of evolution?