Elephants are not the most dominant species in african grasslands, yet they influence community structure. the grasslands contain scattered woody plants, but they are kept in check by the uprooting activities of the elephants. take away the elephants, and the grasslands convert to forests or to shrublands. the newly growing forests support fewer species than the previous grasslands. which of the following describes why elephants are the keystone species in this scenario? a) essentially all of the other species depend on the presence of the elephants to maintain the community. b) grazing animals depend upon the elephants to convert forests to grassland. c) elephants prevent drought in african grasslands. d) elephants are the biggest herbivore in this community. e) elephants other populations survive by keeping out many of the large african predators.

Hello, based in textual evidence provided, the answer should be B), Grazing animals depend upon the elephants to convert forests to grassland.

E) Elephants help other populations survive by repelling many large African predators

Explanation:

Elephants are large mammals especially elephants in Africa have a height of 4 meters and weigh up to 7 tons. In the elephant ecosystem has a very important role and has an impact on the environment. With a large size and height, other predatory animals do not want to get close to elephants. Moreover, this elephant is an animal that prefers to group. Perhaps very few elephants have fallen prey to predators. Thus elephants are animals that indirectly protect other animals in Africa. Things like this also indirectly make grasslands become more fertile and other animal species also become more numerous.

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About Two kinds of neuroglia that insulate axons and dendrites

Details

Class : Senior High

Subject : Biology

Keywords

- Elephants

- Dominant Species

the answer is: the „power stroke“ step.

muscle contraction can be divided into a few steps:

1. the release of ach (acetylcholine) in the synaptic cleft, binding of ach for its receptor and consequently opening of the ca channels.

2. the release of ca, binding of ca for the troponin

3. troponin shifting the tropomyosin, which was blocking the active site on the actin

4. myosin heads attaching to actin by breaking down atp to adp+ pi

5.   formation of the ‘cross-bridge’ on the active site of the actin filament by myosin head

6. “power stroke” -the cross bridge pulls actin, which slides over the myosin

9.     7. the release of adp completes the cross-bridge movement and atp attaches to myosin, breaking the actin-myosin cross bridge.