Density-dependent factors ________.a. include the effects of a hard freeze on a single species within a communityb. include the
effects of a hard freeze on an entire communityc. cause decreases in the number of species in an ecosystemd. include the effects of disease, predators and food on a single species within a communitye. include the effects of rainfall on an entire community
d. include the effects of disease, predators and food on a single species within a community
Explanation:
So-called density-dependent factors are those that prevent excessive population growth due to the large number of individuals in a given population: disputes over space, food, sexual partner eventually lead to decreased reproductive rate and increased mortality. Density-dependent factors may also be considered to be the effects of disease, predators and food on a single species within a community.
C)Its defeat in wars against Europeans was one of the events which motivated China to launch its Self-Strengthening Movement in the 19th Century. The Self-Strengthening Movement was largely specifically economic and military modernization and the idea that the Chinese would become stronger in these areas if they adopted Western techniques.
The speech felt short of trustworthiness because the fact that the presentation well organized, it is false that the world is ending by 2020. This implies that the information from the speech is not correct and cannot be relied on. A good speech must contain factually correct information and can be relied on.