Answer: 1. Cambrian period, 5. rotation at the shoulder joint. 3. d. notochord, 4. d 2. d.
Explanation:
The answer is competition.
Competition is an interaction between organisms. If resources, such as food, water, sunlight, territory, are limited and several species depend on these resources, then, they must compete with other species to gain the resources. So, if predators are present, this means that they will maintain the size of prey population on some optimal level. With fewer individuals in the population, there will be less competition for resources.
Therefore, <span>In natural ecosystems, the presence of predators lessens the effects of <u>competition</u> among the prey.</span>
The answer should be altitude
Explanation:
some ppl change there color to many other colors and some time there shape