Which is an example of a learned behavior? A. left-handness in a person B. a racoon eating trash C. an opossum lying still when it feels threatened D. an arctic fox turning white in the winter
What is B. a racoon eating trash
Which of the following acts as both a constructive and destructive process?
A. Erosion B. Earthquake C. Volcano D. Deposition
What is C. Volcano
You are studying an ecosystem. In this ecosystem, there are microorganisms called algae. Which claim best and evidence best support the conclusion that some microorganisms are beneficial?
A. Algaeeat microscopic shrimp to keep the ecosystem balanced.
B. Algae are green and provide a colorful warning for humans not to swim in the pond.
C. Algae produce oxygen that is used by the fish in the pond.
What is C. Algae produce oxygen that is used by the fish in the pond.
A student measures the mass of a whole orange. He cuts up the orange and measures the mass again. What is TRUE about the orange's mass before and after it was cut up? A. It was greater when it was whole. B. It is greater in pieces. C. It is the same whole or cut up. D. It is less when it is a whole.
What is C. It is the same whole or cut up.
A student is observing plant cells under a microscope. She puts two plant cells under a slide. Which two characteristics would she observe to be different in the plant cells from animals?
A. cytoplasm B. nucleus C. cell membrane D. cell wall
E. chloroplast F. molecule
D. cell wall
E. chloroplast
As the temperature of water increases from 0 degrees C to 100 degrees C, what changes of state does it pass through - going from coldest to hottest? A. ice, water vapor, liquid water B. liquid water, ice, water vapor C. water vapor, ice, liquid water D. ice, liquid water, water vapor
What is D. ice, liquid water, water vapor
Which process(es) could occur as a result of rain?
A. Erosion B. Weather & Erosion
C. Weathering & Deposition
D. Weathering, erosion, and deposition
What is D. Weathering, erosion, and deposition
Some plants do not have stems. Most plants, however, need stems. If you were developing a model of a plant for the purpose of classifying the plant, what other structure might be helpful to include?
A. stem B. leaf C. root D. flower
D. flower