Answer: The producers are the bluegrass. Adding a limiting nutrient to the grass would increase the amount of primary productivity. The result would be an increased amount of biomass at the producer level, and increasing biomass and available energy at each successive level. The number of birds could increase, because there would be more for them to eat.
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We have that the first graph shows that the wagtails take more calories per second when they eat dung flies of length 7mm, since that is the peak. Thus, it would make sense for wagtails to eat these flies. The second graph shows that this is indeed the case, namely most birds choose this length of flies, especially given the number of available flies. This showcases natural selection; birds that chose other lengths had a disadvantage since they needed more time to get their required calories.
Answer:Tay-Sachs is an autosomal recessive disease caused by mutations in both alleles of a gene (HEXA) on chromosome 15. HEXA codes for the alpha subunit of the enzyme β-hexosaminidase A. This enzyme is found in lysosomes, organelles that break down large molecules for recycling by the cell.
Explanation:
They have hard shells that makes it safer for the on rocks