Ecosystems maintain themselves by cycling energy and nutrients obtained from external sources. At the first trophic level<span>, </span>primary producers<span> (plants, algae, and some bacteria) use solar energy to produce organic plant material through photosynthesis. Herbivores—animals that feed solely on plants—make up the second trophic level. Predators that eat herbivores comprise the third trophic level; if larger predators are present, they represent still higher trophic levels. Organisms that feed at several trophic levels (for example, grizzly bears that eat berries and salmon) are classified at the highest of the trophic levels at which they feed. Decomposers, which include bacteria, fungi, molds, worms, and insects, break down wastes and dead organisms and return nutrients to the soil
I got this passage from Annenberg Learner
</span>
Answer: the conditions at a hydrothermal vent makes it impossible to plants to to grow the need the sun.
Explanation:
Answer:
Explanation:
The goal of technology is to improve the way people live.
In general, when technology attempts to solve problems of matter, energy, space, or time, it is successful. When it attempts to solve human problems of the mind, communication, ability, etc.
provide a variety of technological information and ideas. encourage curiosity, ingenuity, resourcefulness and discrimination. stimulate self-confidence through the knowledge and application of technology. develop practical skills through the creation of products/solutions.
