The plants in level 1 of a food pyramid obtain 30,000 units of energy from the Sun. How much energy is available for the organisms in level 2? Level 3?

The production of cells during mitosis into specialized function is recombination or differentiation

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?

Which is abiotic? a. tree sap b. insect c. sunlight d. wood table