Sand dollars, clams, and sand crabs usually live in

a. salt marches.

b. tide pools.

c. rocky shores.

d. sandy shores.

Melanin is a protein pigment that protects us from ultraviolet radiation. What level of structural organization is the classification of melanin?

According to Darwin's theory of evolution, in which order do the steps of natural selection happen? Some members of a population survive and reproduce, their environment or location changes, and favorable traits are passed on to offspring.

What makes up a code for each amino acid?

Why is the presence of insects in a rain forest ecosystem important?

Which of the following units of measurement would be most appropriate for measuring distances within our galaxy?

A nurse is caring for a client with hyperthyroidism. which laboratory test will be most beneficial in monitoring the effectiveness of drug therapy?

In X, the instructions on the DNA are copied and transcribed onto a molecule of Y RNA. Which terms correctly complete this statement? X: transcription Y: messenger X: translation Y: messenger X: transcription Y: transfer X: elongation Y: transfer

What is a characteristic of a Index Fossil

DNA encodes the information necessary to produce the proteins needed by your body. While this is true for humans, is it the case for other organisms? A) No, humans are the only species to use DNA.

Why is the symbol X avoided in algebra?