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Nikolay [14]
3 years ago
8

Orcas, or killer whales, are natural predators of sea otters. It has been observed that in regions where the sea otters are not

present, sea urchins grow rapidly and destroy much of the natural kelp vegetation. Which of these statements is correct in this context?
Biology
1 answer:
olga55 [171]3 years ago
8 0

Answer:

D)  Sea otters are a keystone species as they prevent a herbivorous species from completely destroying a plant species.

Explanation:

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Answer:

Please put this question in English and I would then love to help you. Thanks.

3 0
3 years ago
Which of the following is UNLIKELY to affect bone remodeling?
S_A_V [24]

Glucagon

This is a hormone that deals with blood sugar homeostasis. When blood sugar levels are low, glucagon is produced to convert the fats in the reserve back to glucose until normal levels are achieved.

Explanation:

Bone remodeling involves coordinations of osteoclasts and osteoblasts cells in the bone. The former breaks down bone tissue while the latter mineralizes bones. Calcium is the main ion in the body significant in mineralization of bone. Excess Ca2+ is stored in bone while low calcium levels in blood result in bone resorption.  

Stress on a bone also causes increased mineralization to strengthen the bone against this stress. This is why astronauts when they go to space, due to less stress from low gravity, bone loses its mass. When they return back to earth, the bone readjusts to the increased stress from higher gravity by increased mineralization.

The hormone responsible for bone homeostasis is parathyroid hormone.

Learn More:

To learn more about bones check out; brainly.com/question/4128260

#LearnWithBrainly

3 0
3 years ago
- Which is an advantage to biomass energy? *
KATRIN_1 [288]

Answer:

D. There will always be waste produced that can be used for energy.

Explanation:

Biomass energy is a renewable energy source because its does not have limited supply. We can always grow trees and crops, and waste will always exist.

7 0
3 years ago
Read 2 more answers
How do living things make use of the energy stored in food molecules?
ipn [44]
Answer:
             The energy stored in food molecule (glucose) is released in he process of respiration. 

Explanation:                     Respiration is a cellular process in which glucose molecule is broken down into carbon dioxide, water and ATP is produced as end product. Respiration consists of following main steps:
1. Glycolysis:                It occurs in the cytoplasm of cell, and each glucose molecule is converted into two pyruvates with help of ATP.
2. Formation of Acetyl coenzyme A:                                                        It is a connecting link reaction between glycolysis and Kreb cycle. In this phase Each pyruvate react with Coenzyme A to become acetyl coenzyme A.
3. Kreb Cycle:                   It occurs inside mitochondria. In this cycle each acetyl coenzyme A with fixed with CO to produce citrate which undergo in a cyclic reaction to produce ATP and NADH. . 
4. Electron transport chain:                                           It is the last step of respiration which complete in mitochondrial membrane. In this phase most of the energy is produced along with H₂O as by product.

4 0
3 years ago
Tropical climates exist between which of the following latitudes?
irina [24]
Tropical climate is a region of the earth surrounding the equator.  When the earth is exposed to light from the sun it is right over the equator and up 23 degrees of latitude Tropic of Cancer in the northern hemisphere and Tropic of Capricorn in the southern hemisphere
3 0
3 years ago
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