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-BARSIC- [3]
3 years ago
11

What prevents sperm cells from traveling the entire distance to the egg?

Biology
1 answer:
tatuchka [14]3 years ago
5 0
Birth control can prevent that. Such as condoms or diaphragms.
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If a disease strikes the snake population in the food chain shown, what will be the initial effect on the populations of hawks a
Ilya [14]

Answer:

The hawk population will drop while the rabbit population will rise.

Explanation:

With the way the pyramid is structured, it shows that the rabbits eat grass, snakes eat the rabbits, and hawks eat the snakes. If the snakes are gone, the hawks will lose a food source, and their population will drop. Also, the rabbit population will rise, because the snakes eat the rabbits, and if the snakes are gone, they won't have any predators.

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3 years ago
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Which of the earth systems does NOT transfer energy through convention cells
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It’s most likely conduction.
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Who first proposed the theory of continental drift
Harman [31]
<span>Alfred Wegener first proposed the theory

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SOMEONE PLEASE HELP: How does the knowledge of what a landfill is relate to sustainability?
yarga [219]

Answer:

Adding moisture to the waste in a suitably designed and operated landfill should increase its degradation, leading to less risk and a move towards sustainability. ... Proper aeration, moisture addition and gas extraction are needed to control the environment required for aerobic processes to thrive with optimum efficiency.

Explanation:

6 0
3 years ago
In the context of stress hormones and the brain, _____ has a profound effect on the hippocampus, a brain structure that plays a
tatiyna
The correct term to fill in the blank would be cortisol. In the context of stress hormones and the brain, cortisol has a profound effect on the hippocampus, a brain structure that plays a pivotal role in memory. Cortisol is classified as a steroid hormone which is produced by the adrenal gland. It is deemed as the stress hormone as it is released as a response to stress as part of the fight or flight process. From studies, cortisol was found to have effect on the hippocampus when present in high levels. It damage and kill the cells in that area of the brain. The hippocampus is the area of the brain that is responsible for the long term memory storage. So, when this part is damage then the storage for our memories would surely be affected.
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3 years ago
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