Biology, 28.06.2019 02:50, breann6

Which of the following could qualify as a top-down control on a grassland community? a) limitation of plant biomass by rainfall amount b) influence of temperature on competition among plants c) influence of soil nutrients on the abundance of grasses versus wildflowers d) effect of grazing intensity by bison on plant species diversity e) effect of humidity on plant growth rates

Answers: 2

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The effect of grazing intensity by bison on plant species diversity could qualify as a top-down control on a grassland community (Option D).

The top-down control refers to the biological phenomenon where populations at higher trophic levels regulate the population size of organisms in lower trophic levels.The top-down control is also known as a predator-driven system, which means that predators control the trophic chain.In consequence, in a top-down control model, the interaction between a top predator and their prey regulates the size of the populations in lower trophic levels.Conversely, in a bottom-up control model, the control is driven by the producers present in the ecosystem.

In conclusion, the effect of grazing intensity by bison on plant species diversity could qualify as a top-down control on a grassland community (Option D).

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answered: cloey6544

According to the top down control, each trophic level is controlled by the very next trophic level. It says that predators control the population of prey.

Therefor the correct answer is D

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answered: Guest

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.

answered: Guest

Are you asking about a street map usage if so here is your answer a street map for a very limited area could simply be a bit map or a .jpg image. but a more general map would probably store the streets as vectors. but you shouldn't assume that there is one way to do it

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Which of the following could qualify as a top-down control on a grassland community? a) limitation...