Human activities that clear large areas of land and increase erosion contribute directly to what type

of pollution?

a. biological

b. groundwater

sediment

d. toxic chemical

Anna looks around the skating rink and notices many examples of the movement of thermal energy. For example, she sees her friend holding a cup of hot chocolate in the cold rink. Thermal energy flows from

Which organelle acts like the walls and door that regulates what goes in and out of the factory

Where are the club-shaped basidia of a mushroom formed?

Time that has passed since the origin of earth is known as

What is the scientific term for how rocks from magma? 1. Gabbro 2. Intrusive 3. Lava 4. Extrusive

A pregnant woman at 37 weeks gestation calls the clinic to say she thinks that she is in labor. the nurse instructs the woman to go to the health care facility based on the client's report of contractions that are:

A human nose is capable of detecting how many basic odors? a. 20 b. 40 c. 49 d. 50

Why is a control necessary to have when designing an experiment?

Why are there many separate ecosystems in a rainforest

Describe several ways in which the cheek epithelial cells differed from the potato, tomato, and onion cells? be specific