Answer:
Most populations <u>do not </u>experience: a) exponential growth
Explanation:
Populations that experience exponential growth models show an increase in proportion to their size. The increase in the population size depends on the individual´s reproduction rate: a population that grows at constant exponential rate gains individuals faster as the population increases in size.
This model states that populations live in an environment with unlimited resource availability, so the density factor does not influence population growth. There is no density-dependence effect nor competition for resources. Natality and mortality rate do not depend on density. There is a constant growth rate per capita, and it is proportional to the population size.
Exponential growth is hardly seen in nature due to its characteristics.
Almost every environment shows a carrying capacity point. Carrying capacity is the capability of the environment to support a population. Commonly environments have limited resources and space, and as the population grows, competition increases too. The per capita growth rate decreases as population size increases. Finally, the population reaches the maximum point of carrying capacity, delimited by available resources, such as food or space.
The carrying capacity might be affected by limiting factors, which might be a result of the population density (for example, competition) or might be density-independent. This last case refers to dense-independent factors, and among these, we can mention human impact or natural disasters (fires, volcanic eruption, flooding).
Only a few species can experience exponential growth, such as bacterias.
The cell is eukaryotic and capable of movement.
Answer: streaming along as a mass of cytoplasm.
Explanation:
Plasmodial slime molds are single cells that are fuse together by 1000 nuclei that are formed by the fusion of several flagellate cells. They form fruiting bodies when there is stimulus. The fruiting bodies help to disperse individual cells when there is favorable condition. They move by ooze to obtain good.
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them.
Ground water can only be found within a few miles of the Earth’s surface because water can permeate through the soil, but at one point, the ground becomes too dense for water to seep through.
