Which of the following best describes the matter present in an ecosystem?
A.
The waste materials generated by one organism are often reused by other organisms.
B.
When an organism reproduces, new matter is added to its ecosystem.
C.
The total amount of matter in an ecosystem is constantly decreasing due to the process of decomposition.
D.
New matter is continuously generated by an ecosystem in a process known as photosynthesis.

A. The waste materials generated by one organism are often reused by other organisms.

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before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

if the hares very faster than they are now, and thus the lynx's hunting success rate drops because it will be harder to catch them, the rate that will change will be the pray-rate. the pray-rate will change because more hares will be able to survive, thus more individuals for reproduction, so the end result will be increasing population of hares.

the predator-rate will remain pretty much the same because there will be more than enough pray, but the hunting success rate is stagnant.