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## Which type of process occurred in the ecosystem that was affected by the 1988 fires in Yellowstone Park which destroyed most of the vegetation but left the soil intact primary succession secondary succession a climax community species extinction?

Explanation: In ecosystems, secondary succession occurs as certain events such as fires cause vegetation to temporarily disappear from one area.

## Under which condition would a population most likely increase?

Q. Under which condition would a population most likely increase? The carrying capacity exceeds the habitat area. The number of deaths exceeds the number of births.

## Why a population fluctuate when it reaches to carrying capacity?

Once carrying capacity ( K) has been reached, populations tend to fluctuate around ( K), periodically going slightly over and under this population size based on the available resources in the environment.

## How do birth rates and death rates influence the size of a population?

Population change is governed by the balance between birth rates and death rates. If the birth rate stays the same and the death rate decreases, then population numbers will grow. If the birth rate increases and the death rate stays the same, then population will also grow.

## What are three or more factors that may determine the carrying capacity of the earth?

Carrying capacity, or the maximum number of individuals that an environment can sustain over time without destroying or degrading the environment, is determined by a few key factors: food availability, water, and space.

## What is r in the population equation?

Net reproductive rate (r) is calculated as: r = (births-deaths)/population size or to get in percentage terms, just multiply by 100. the population is so much bigger, many more individuals are added. If a population grows by a constant percentage per year, this eventually adds up to what we call exponential growth.

## What are K selected and R selected species?

The two evolutionary “strategies” are termed r-selection, for those species that produce many “cheap” offspring and live in unstable environments and K-selection for those species that produce few “expensive” offspring and live in stable environments.

2021-05-15