Which of the following steps is second in this food chain? a. The snake obtains energy by eating the mouse. b. Plants make energy-rich food using sunlight. c. The Sun emits energy. d. The hawk obtains energy by eating the snake.

How is energy lost that is not used for life processes?

Which of the following is a biotic factor?

Which of the following does NOT use light energy to make food?

Which of the following items is abiotic?

Which of the following is a biotic factor?

Phytoplankton are said to release how much of the oxygen in Earth’s atmosphere?

As you move upward, from level to level, in an energy pyramid, energy ____.

If the first trophic level in an energy pyramid receives 10,000 units of energy from the Sun, how much energy is available for the second trophic level?

Which of these is the name for the release of water vapor from leaves and stems of plants?

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