Molecules diffuse across the plasma membrane with assistance from membrane proteins, such as channels and carriers.
Explanation:
you just need to know that :
population density = no of ( what is asked) / land area.
In the capillaries, hydrostatic
pressure (HP) is exerted by blood that is often
measured for diagnosis since it is closely related to the force and rate of the
heartbeat and the diameter and elasticity of the arterial walls. The net hydrostatic pressure (HP) is the
hydrostatic pressure in the capillary minus hydrostatic pressure in the interstitial
fluid.
Answer: A mutation results in different alleles for a gene and these different alleles will cause adaptations that may be favorable or unfavorable. If no species in an area has adaptations suited for the environment after it changes, extinction will occur.Adaptations result from random mutations in the genes of organisms. Depending on the environment, these adaptations may be favorable or unfavorable. If an adaptation is favorable, it is selected by nature and, over time, more and more organisms in a population will have it. If the environment changes so much that the adaptations of a species are no longer enough for the species to survive, extinction will occur.Mutations is very different because it results in different alleles for a gene.Adaptations is where an animals ADAPTS to an environment.Natural selection consists of overproduction,variation, favorable adaptations.extinction is when a species completely disintegrates.
Explanation: