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djverab [1.8K]
3 years ago
15

Why are orcas having trouble reproducing?

Biology
2 answers:
morpeh [17]3 years ago
7 0

Orcas primarily suffer from the effects of pollution, habitat loss, dams that block salmon spawning routes and starvation from declining populations of wild salmon, their main food source.

daser333 [38]3 years ago
6 0

Answer:

they start breeding at the ages 14-15, give birth to only 1 calf at a time every 3-10 years, the babies nurse for a full year, and almost half of all babies die within the first year :/

Explanation:

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life cycles of sexually producing organisms involve the alternation of haploid and diploid stages true/false
kolbaska11 [484]

Answer:

True

Explanation:

<em>The life cycles of sexually producing organisms generally involve alternation between the haploid and diploid generations.</em>

<u>Sexual reproduction involves the fusion of gametes - fertilization. The gametes are haploid (n) and are usually formed by the reductional division (meiosis) of diploid (2n) sex cells. </u>

Haploid gametes represent the haploid stage of the life cycles of sexually reproducing organisms.  During fertilization, the male and female gametes fuse together to form a diploid zygote. The zygote then continues to divide equationally (mitosis) and differentiates to give rise to a baby and eventually to either male or female adult organism.

8 0
3 years ago
When a protein (peptide) hormone binds to receptors on the surface of a cell:
Licemer1 [7]

Answer:

the cell membrane becomes depolarized.

Explanation:

Na+ moves in, K+ moves out.

hope it helps!

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3 years ago
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The growth of a plant toward light is an example of _____.
Svetradugi [14.3K]
The most appropriate answer is Response !!

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Explain why water conservation is important​
Dahasolnce [82]

Answer:

Conserving water is important because it keeps water pure and clean while protecting the environment.

Explanation:

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Why do you get hungry?
suter [353]

Answer:You may feel hungry frequently if your diet lacks protein, fiber, or fat, all of which promote fullness and reduce appetite. Extreme hunger is also a sign of inadequate sleep and chronic stress. Additionally, certain medications and illnesses are known to cause frequent hunger.

Explanation:

"Hunger hormones" (ghrelin) in your blood and an empty stomach signal the brain when you're hungry. Nerves in the stomach send signals to the brain that you're full, but these signals can take up to 20 minutes to communicate -- and by that time, you may have already eaten too much.

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