If the environment changes with the precession of the earth's axis, then what changes as the earth's axis moves? Answer choices: - Water - temperature - The atmosphere - Environment - The closeness of the moon - global warming - The sun's temperature - climate
Environment

If plants make their own food from the sun, then how do plants make food? Answer choices: - In a kitchen - By wind and rain - organic matter - Energy - From the sun - In the darkness - by indirect light - By pollination
From the sun

If sharks have as skeleton that contains a protein called collagen, then sharks have as skeleton that contains? Answer choices: - elastin - Epidermis - calcium - fur and fat - marrow - strength - all matter - collagen
collagen

If burning coal, oil, and natural gas increases carbon in the atmosphere, then what enters the atmosphere when coal, oil, and natural gas is burned? Answer choices: - Heat - toxins - Cars - Gas - h2o - tar - Carbon - energy
Carbon