Which of the following is NOT a way that floods benefit an ecosystem? * 1- Refill wetlands with water
2- Cleans oil and sediments off parking lots
3- Covers floodplain with nutrient-rich soil
4- Recharge groundwater

Assume that a student is given two different models of bacteria, with one model consisting of big bacteria and the other consisting of small bacteria. how can the student demonstate the theory of endosymbiosis using the models

Which of the following are false concerning microbes? a. microbes generate oxygen through photosynthesis.b. the primary role of microbes on the planet involves causing disease in animals and humans.c. microbes produce vitamins in the intestines.d. microbes play a role in breaking down waste and decomposing dead organisms.

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment