How old is the solar system, and how is this age determined?
What will be an ideal response?
The Earth is 4.45 billion years old, as indicated by radiometric age dating of meteorites that should have formed at the same time the Earth did.
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Electromagnetic radiation provides energy for
A) the movement of the atmosphere. B) the growth of plants. C) the evaporation of water. D) all of the above
Adaptation in populations takes place in response to
A) anticipated future needs. B) selective pressures they have not yet experienced. C) only the selective pressures they currently experience. D) only selective pressures that favor survival.
Yearly weather-related damage costs have risen 500% since 1975
Indicate whether the statement is true or false
Trophic structure refers to the pattern of food consumption in an ecosystem
Indicate whether the statement is true or false