the process of changing energy from one form to another. Solar energy is changed into chemical energy by plants.

How are the organisms on Earth related, and how is there such variety of life on the planet today?

Do you think our homes and schools should be powered by renewable energy?

If you monitored energy allocation in an adult penguin for just a few months instead of an entire year, you might find the growth category to be a significant part of the pie chart.

Which factors characterize ecosystems? A. biotic factors only B. abiotic factors only C. both biotic and abiotic factors D. neither biotic nor abiotic factors

As the population of an area increases, so does the amount of air pollution. One source of air pollution is vehicle exhaust. Which of the following can be a result of this pollution? A. decreased acid rain B. decreased greenhouse gases C.

James is making models of plant and animal cells using objects supplied by his teacher to represent organelles. For one cell, he will place the objects in a shoebox. First he fills a balloon with water and places it in the shoe box.

What holds DNA and controles cells activities

Usually, a mutation in the promoter region of an operon causes reduced levels of synthesis of the proteins encoded by that operon. Occasionally, a mutation in the promoter region actually causes increased levels of synthesis.

Genes do not exert the only influence on personality. therefore,:

Bats contain brown fat between their shoulder blades. how could this brown fat be an adaptation to torpor?