D is the answer to the problem
Answer:
Reproductive isolation refers to the inability of an organism or species to breed successfully with other organism or species.
It may arise from various factors such as:
- Geographical isolation such as river, mountain, etc
- Behavioral changes such as mating time or season, mating rituals, mating location etc.
- Physiological differences such as change in shape of sex organs which causes lack of fit between copulatory organs.
- Genetic differences.
Reproductive and geographical isolations between two populations (of same species) inhibit the flow of genes among them. Slowly, these isolations increase the variations in the gene pools of the two populations.
These genetic variations keep on increasing with time. In addition, as an adaptation to their surrounding or habitat the two populations would develop different behavioral and physiological changes
With time, these differences will increase up to such an extent that the two populations would not be able breed with each other. Hence, it would lead to the evolution of one or both the populations into new species.
Answer:
to be honest I think its bacteria.
Explanation:
The little organisms look like bacteria so it has to be bacteria.
The passes food through the esophagus, the stomach partially digests food, and the large intestine (and the rectum) stores undigested waste.
SUTURES are synarthrotic joints that have distinct, interlocking, usually irregular edges that increase their strength. Sutures are joints between the bones of the skull.
Synarthroses are immovable joints (synarthrosis) in which bones are separated by a thin layer of fibrous connective tissue.
A suture is a narrow synarthrotic joint that occurs between specific bones of the skull.
These main sutures of the skull include metopic suture, coronal suture, sagittal suture, and lambdoid suture.
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