A survey of a pond community identified 57 different species that made up the community. This number can best be described as a measure of the community’s

The California sea otter has the world’s thickest fur. The entrapped air provides:

Asbestos, radiation, and ultraviolet light are all examples of _____.

Which is the best example of a coupled human–natural system?

Which BEST describes why it is important for us to understand how things are measured with the SI system?

The island of Madagascar, off the southern African coast, has a highly unique endemic biota. Roughly 170 million years ago, Madagascar was landlocked in the middle of the supercontinent Gondwana. Gondwana eventually split by continental drift, forming Africa, South America, India, Australia, and Antarctica. For the past 88 million years, Madagascar has been isolated, but some new species can still reach the island from the coast of Africa. This suggests that the evolution of Madagascar’s unique biota is

Which organism is not correctly matched with its dispersion pattern?

If both homologous chromosomes of each pair exist in the same nucleus, that nucleus is

In an experiment, the researcher is trying to examine the effects of artificial sweeteners on the germination of radish seeds.  She gives the plants in Group A sugar.  Plants in Group B receive NutraSweet.  Plants in Group C get Sweet & Low.  She finds that those in Group A have the longest roots after two weeks.  There is also a group D.  It is the control.  What type of sweetener should it get?

If the F1 plants in the classic monohybrid cross (purple/white flowers) were crossed with each other, what would be the phenotypic ratio of the F2 generation plants?