The first law of thermodynamics states that energy can't be created or destroyed. If people can't create energy, where do we get energy to do work?

Which situation describes predation? A. A tick lives in an animal's fur coat. B. A snake eats a mouse in a cornfield. C. A tapeworm lives in an animal's intestine. D. A wood louse eats dead, decaying leaves.

Farmers who live on the sertao are most likely?

Braydon traveled a long distance to see the largest body of enclosed water in the world. Where did Braydon go? A. the Caspian Sea B. Lake Baikal C. Lake Ladoga D. the Mediterranean Sea

In 1990, what was the population density near Chicago? A. 6 or fewer people per square mile B. 18-45 people per square mile C. 45-90 people per square mile D. 90 or more people per square mile

What tool was used to do measure the depths of the ocean? •What are the 2 pieces of equipment used to collect bottom samples on the Challenger? •What was a newly invented piece of equipment used on the Challenger ship to get water samples called?

The main reason petroleum cannot be a mineral is because it is man-made. a. true b. false

Who was st. petersberg named after

What type of environment would produce fertile soil at a fast rate

Which of the following is a way that humans can prevent erosion?

What is the removal of fish from an area faster than the rate at which they can replace themselves called