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Sveta_85 [38]
1 year ago
14

How long have asteroids been striking Earth?

Biology
1 answer:
faust18 [17]1 year ago
8 0
65 million years ago
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I need help I'm really behind because my computer broke. This is Earth Science Btw 15 Points
Inessa [10]

Answer:

1. Mechanical weathering breaks rocks into smaller pieces without changing their composition

2. Ice calving/glacier calving/iceberg calving

3. Physical weathering

Explanation:

7 0
2 years ago
What are molecules that are both attracted to water and repel water called?
guajiro [1.7K]
Hydrophylic Molecules
3 0
3 years ago
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Many bedbugs are highly resistant to insecticides, but the scientist’s bedbugs aren’t resistant. Explain why this happens based
Nutka1998 [239]

Wild Bedbugs become insecticide resistant because of the mutations and natural selections.

<h3><u>Explanation</u>:</h3>

As the huge amount of pesticides and insecticides are sprayed in the rooms for cleaning, the pests and insects like bedbugs dies in huge portions because of the toxin. But some of the bedbugs remain alive as they have mutations that help them to detoxify the toxins given, or bypass the metabolic processes so that the toxins don't hamper them much.

Now as the population becomes very small(bottle neck effect), the nature selects these organisms over the other to propagate more sufficiently and enormously. As the nutrients and supplies are also available, so the bedbugs don't suffer any lack of nutrition which can be a determining factor of their population.

Thus the wild bedbugs become resistant to insecticides while the experimental one remain succeptible to insecticides.

4 0
3 years ago
Reinforcement is most likely to occur when__________ (A) the environment is changing (B) hybrids have lower fitness than either
PolarNik [594]

So option B (hybrids have lower fitness than either parent population) is the correct answer.

What is Reinforcement?

Reinforcement is a consequence used in behavioral psychology to strengthen an organism's future behavior when that activity is preceded by a specific antecedent stimulus. This strengthening impact can be quantified as a higher frequency of behavior, a longer duration of behavior, a greater volume of behavior, or a shorter latency.

To learn more about Reinforcement

brainly.com/question/1483660

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5 0
2 years ago
Are stars luminous or non-luminous? Explain your answer.
rusak2 [61]

Answer:

Both a torch and a star are considered to be luminous objects. In order for us to see an object that is non-luminous, it must reflect some of the light it receives from a luminous source, such as the Sun.

Explanation:

6 0
3 years ago
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