Answer:
Chemical energy changes into thermal energy and light energy
Answer: D.adding more shelter for frogs
Food chain can be defined as the linear series of food and energy distribution, in which one organism is consumed by the other in order to obtain nutrient and energy.
In the given situation a person wants to reduce the mosquito population, which is present as a primary and secondary consume in the pond food chain. By adding more shelters for frogs can reduce the population of frogs as the frogs are present as tertiary consumers in the pond food chain. These frogs will feed upon mosquitoes, and limit their population.
It depends on whatever it's real or just a simple theory. But, at times it may not be simple as it seems, because theories are often left as theories. In the near future (or even now) they'll be testing to see if theories can be proven as a fact!
Good luck!
Answer:
conducting research to observe things in their natural habitat.
Explanation:
for example if someone is studying a certain culture, they would study the peoples culture, folklore, ways of living, and would interview them.