Marmots is a primary consumer
Mosses are producers
Lynx is predator
Dung cannon is decomposers
Answer:
The answer is actually B) Memory T. Memory T cells rapidly produce large numbers of effector T-cells when re-exposed to their antigens, which provides the immune system memory against past infections.
Answer:
- Interruption in the genetic flow between separated groups
- The emergence of new mutations in each of the groups, and their accumulation in time. Slow and gradual differentiation between populations.
- Genetic divergence by natural selection and reproductive isolation
- Prezigotic isolation mechanisms
Explanation:
Allopatric speciation consists of the geographic separation of a continuous genetic background that can give place to two or more new geographically isolated populations. These separations might be due to migration, extinction of geographically intermediate populations, or geological events. In this speciation, some barriers impede genetic interchange, or genetic flux, as the two new groups that are separated can not get together and mate anymore. These barriers might be geographical or ecological.
The process of allopatric speciation involves different steps that affect organisms:
- The emergence of the barrier.
- Interruption in the genetic interchange
- The occurrence of new mutations and their accumulation in time in each population. Slow and gradual differentiation.
- Genetic divergence by natural selection and reproductive isolation makes it impossible for the two groups to mate even if the barrier disappears.
- Prezigotic isolation mechanisms will be favored by selection if occurs a secondary contact between the new species in formation.
Answer:
The correct answer is - Protect organs
Explanation:
The skeletal system is the internal frame of the body that includes all the bones and joints present in the body. There are 206 bones in the adult human skeletal system.
The major roles of the skeletal system to help in movement, support, and protecting vital organs such as hearts, stomach, lungs, brain, and other organs. It also helps in movement and providing support to the body.
Answer:
Exposition is a text that elaborates the writer‘s idea about the phenomenon surrounding. Its social function is to persuade the reader that the idea is important matter.
Explanation:
