What causes changes in the sizes, shapes, and positions of Earth's continents and oceans?

A.

very strong ocean currents

B.

global wind belts

C.

continental drift

D.

tectonic plate motion

Using your knowledge of activators and repressors, hypothesize two ways in which transcription of the lct gene could be turned off.

The function of which cell part is most similar to that of the human excretory system

Mutation of which of the following would result in the least disruption during development of a frog embryo? A. ribosomal protein gene B. RNA polymerase gene C. Homeotic gene D. Melanin Gene

Which type of bacterium produces an A-B toxin? Salmonella Vibrio cholera ETEC Shigella dysenteriae

Describe any trends in your simple reaction data-either in the fastball simulation or case 1. what factors may have attributed to the variation you see over the 10 trials?

The pituitary gland is located in the brain and controls?

Sulfur emissions from industry combine with water in the atmosphere and form acid rain. A new factory is built very close to the lake that Josh visits often.

The role of a radula is to bring oxygen into the animal. true of false

Which action explains how a somatic cell mutation can harm an organism

A nurse is giving medication instruction to a client who is taking metoprolol (Lopressor). Which statement by the client would indicate that teaching has been effective?