Animals need shelter and insulation in the Tundra. The animals here tend to have thicker and warmer feathers and fur. Many of them have larger bodies and shorter arms, legs and tails which helps them retain their heat better and prevent heat loss.
There Are Actually 5 Steps.
Step 1: P<span>roduce More Offspring Than Can Survive
Step 2: </span><span>variations occur in a species
Step 3: </span><span>competition for limited resources
Step 4: </span><span>better adapted organisms are more likely to survive and reproduce
Step 5: </span><span>change in a population will most likely occur</span>
The factors that most directly affect blood flow are blood pressure, blood volume, resistance and activity level.
true
Answer:
The amount of people per square mile or kilometer of land; also called arithmetic density.
Answer:
Examples of vestigial structures include the human appendix, the pelvic bone of a snake, and the wings of flightless birds. Vestigial structures can become detrimental, but in most cases these structures are harmless; however, these structures, like any other structure, require extra energy and are at risk for disease.
Explanation:
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