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Oxana [17]
2 years ago
7

Why is an environmental contingency plan important?

Biology
2 answers:
Firlakuza [10]2 years ago
4 0

Answer:

B!!! The effects of environmental changes cannot be determined with certainty, so contingency plans are necessary to effectively deal with unexpected changes.

Explanation:

Y_Kistochka [10]2 years ago
3 0

Answer:

B

Explanation:

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Hope this helps! ^^
4 0
2 years ago
Number 23 ASAP please
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Underwater plants begin to die due to lack of photosynthesis, which reduces the amount of dissolved oxygen in the water. Animals also begin to die due to less plants available for food.

Explanation:

5 0
3 years ago
What ions, ATP, and neurotransmitters are used in muscle contraction and where are they used??
vivado [14]

Answer:

Hiya there!

Explanation:

ATP then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site. ATP can then attach to myosin, which allows the cross-bridge cycle to start again; further muscle contraction can occur.

acetylcholine : Skeletal muscle contraction and changes with exercise. (A) Neurotransmitter (acetylcholine, ACh) released from nerve endings binds to receptors (AChRs) on the muscle surface.

The muscle contraction cycle is triggered by calcium ions binding to the protein complex troponin, exposing the active-binding sites on the actin. As soon as the actin-binding sites are uncovered, the high-energy myosin head bridges the gap, forming a cross-bridge.

Credit sourced from "bio.libretexts.org"

Hope this <em><u>Helped!</u></em> :D

4 0
2 years ago
Which of the following is considered the first receiver for the nicotine in a smocking person?
Katena32 [7]

Answer:

i think nicotine travels through blood and we know blood reaches the right ventricle first

maybe right ventricle

4 0
2 years ago
In the cranes what does songsam recall in the two flashbacks to his childhood? explain how these memories motivate songsam's act
True [87]
The "Cranes" is a short story book written by Hwang Sunwon. The story is set in Korea during the Korean War and focuses on two childhood friends, Songsam and Tokchae, who are on opposite sides during the war. Songsam has two flashbacks of his childhood memories with his friend Tokchae, where he remembers how they used to climb the trees and catch cranes. These flashbacks act as a reminder of the times he had spent with his friend and the importance of this friendship. As a result, these memories motivate him to let Tokchae free.
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2 years ago
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