Changes in light intensity and temperature cause animals to hibernate. These changes are examples of

a. Targets

b. Sensors

c. Stimuli

d. Costs

Which of these is the correct order through which oxygen enters the body? a. Blood, alveoli, lungs, bronchi, bronchioles b. Lungs, bronchi, bronchioles, blood, alveoli c. Bronchi, lungs, bronchioles, alveoli, blood d.

What is the source of energy that drives photosynthesis? sunlight hydrogen ions electrons oxygen

Where is the tundra biome located? A. near the Tropic of Cancer B. near the Tropic of Capricorn C. just below the Arctic circle D. just above Antarctica

Most of Earth's usable chemical energy came to Earth as solar energy but has been stored as A) fossil fuels. B) nuclear fuels. C) ultraviolet waves. D) geothermal energy.

Why is selective cutting considered more sustainable than clear cutting?

A type of covalent bond where electrons are shared unequally. T/F

Why is phototropism an adaptation that is necessary for plant survival?

Suggest why the cells in a multicellular organism are not all the same.

The classification of life is not an easy task because of the wide diversity of organisms that are found on Earth. Which process was responsible for this wide diversity of life?

What is the general chemical equation for aerobic cellular respiration?