I am guessing this is true or false question.
Answer is true.
Answer: B. Level 1
Explanation:
The prairie community is dominated by the grass and vegetation cover. Thus the lower most trophic level in the prairie ecosystem are the short and tall grasses. They produce major source of biomass for the herbivores of the food chain. They consume the grasses can be designated as primary consumers of the food chain. Also the producers which are grasses which make up the large amount of biomass will provide a source of food for the consumers. They will receive 100 percent energy from the sun and they will utilize 90 percent of it to make their food by the process of photosynthesis. Only ten percent of energy is transferred to the next trophic level.
halogens are the most reactive nonmetals.
I think the correct answer from the choices listed above is option A. Tolerance range is different for different organisms. <span>Animals can </span>tolerate<span> (or survive within) a certain </span>range<span> of a particular factor, but cannot survive if there is too much or too little of the factor. But this range depends on the organism. Hope this answers the question.</span>
Biotic factors are anything in a ecosystem that is living, was living, or is going to live.
From this we can conclude that the biotic factors are remains of dead organisms and flora and fauna.
Temperature and minerals in the soil are abiotic, meaning they will never live.