The movement of carbon dioxide out of cells and oxygen into cells can best be explained by which process?

A) osmosis B) diffusion C) exocytosis D) active transport

The likelihood that a particular event will occur is called

Disorder treated by restricting milk

Which is considered a boundary between two different fronts? A) Cold Front B) Warm Front C) Both Warm Front and Cold Front D) Neither Warm Front or Cold Front

Which of the following events happens first in the development of a new organism? a. A morula is formed. b. A blastocyst implants into the uterine wall. c. A sperm fertilizes an egg to form a zygote. d. A zygote undergoes mitosis.

Unlike bryophytes, ferns A. utilize photosynthesis. B. have vascular tissue. C. exhibit alternation of generations. D. have to get water from the environment

There are four children in the Smith family. One child has blue eyes and blonde hair. The other three children have brown eyes and blonde hair. How can you explain the difference and I color?

The number of trophies levels in an ecosystem pyramid A) is limitless B) is limited by the amount of energy that is lost at each trophies level C) is impossible to count because energy is lost at each trophies level D) never exceeds three

Which of the following geometric shapes best represents the change in energy and change in biomass from one trophic level to the next?

A scientsist is testing the effect of light on plants. He takes one plant and sets it on the window sill where it receives light for approximately 10 hours a day. The other plant he places in a dark refridgerator where it receives no light.

Solar power is a renewable resource because