Choose all the answers that apply. energy in an ecosystem: flows only one way is part of an open system is recycled and reused is eventually lost as heat is transferred through the food chain

The correct answers would be:

In contrast to nutrient, energy flow only in one direction only in an ecosystem.

In an ecosystem, the energy is transferred through food chain. The producers convert solar into chemical energy. 10 percent of available energy is then transferred to the next trophic level (herbivores) and rest of the energy is lost as heat.

Similarly, the energy is passed on to secondary and tertiary trophic levels.

Ultimately, the energy is lost as heat released during decomposition.

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion

"d.) carbon dioxide and hydrogen sulfide"