How does change to an ecosystem that results in succession benefit the ecosystem? group of answer choices
a. it allows ecosystems to operate independently of each other in ends symbiosis between organisms
b. it leads to an increased level of biodiversity
c. it leads to decreased productivity

This refers to weather and atmospheric conditions measured over a long period of time.

Choose one of these concerns and write a short paragraph about its impact on africa. what has caused this problem to occur, and how has it impacted people who live there?

Identify the example of when situation and time are key to assessing risk of harm in a research study: a study on the efficacy of a behavioral intervention for smoking cessation involves both adults and teenagersasking women if they have had an abortionresearch on the prevalence of hiv-infected individuals in communitiesa survey about sexually transmitted diseases