The correct answer from the choices listed above is option A. Adaptations took advantage of the presence of free oxygen in the oceans and atmosphere by the <span>evolution of cellular respiration, which used oxygen to help harvest energy from organic molecules.</span>
Food chains are diagrams that show food energy passes on through ecosystems. There are five different trophic levels in food chains. Primary producers are usually plants which produce their own nutrients. Primary consumers gain their energy by consuming primary producers. Secondary consumers then consume primary consumers, and tertiary consumers consume secondary consumers. The last level consists of apex predators, which are at the top of the food chain and have no natural predators.
Food webs are made up of many smaller food chains. While food chains follow one path in which specific animals find food, food webs follow multiple paths, usually showing how an ecosystems organisms have food relationships.
Answer:
<em>Hello, In all the ecological pyramids, producers (organisms that produce their own food) are found at the lowest trophic level. This trophic level contains the highest amount of energy. The energy in each trophic level of an energy pyramid is just 10 percent of the energy in the level below it. (Why is there less energy available at the top of an energy pyramid than at the bottom?) Less energy is available to organisms in the upper levels because each organism releases some of the chemical energy in food to the air as thermal energy. Less total energy is available with each step up energy pyramid. Hope That Helps!</em>
Answer:
C
Explanation:
C no is the answer I think so. but not sure
Answer:
because it is a moon of Saturn
because it is covered in ice
because it has a deep ocean beneath ice
because there is a chance it hosts life
because it has an atmosphere similar to Earth
Explanation:
