A pond contains 500 fish, 100 of which have been tagged. You catch 50 fish. How many of them would you expect to be tagged?

You discover a new species of bacteria that grows in aquatic environments with high salt levels. While studying these bacteria, you note that their internal environment is similar to the salt concentrations in their surroundings.

The study of DNA provides evidence that all living things are related through evolution by showing that all species what?

A plant with variegated (two-coloured) leaves was left in the sun for several hours. A piece of one of its leaves were then detached (removed) and tested for sugar.

Water travels up the xylem due to A: transpiration B: water tension C: osmosis D: diffusion

The lion-tailed macaque is a species of Old World monkey. Which of the following will the lion-tailed macaque reproduce with? A. other lion-tailed macaques B. other macaques C. any Old World monkeys D. any monkey species

As the human population grows, what happens to our natural-resource requirements? UT O They increase O They decrease They do not change They go in cycles.

A client undergoing corticosteroid therapy is admitted with a peptic ulcer, osteoporosis, and hypertension. which medication may have caused this condition?

Why do most leaves appear green

What is the first word in a two word name of an organism

When a snail is touched it retreats into its shell this is an example of? a. Reproduction b. response to a stimulus c. Metabolism d. a unicelluar organism