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Rashid [163]
2 years ago
6

Which of the following is the biggest threat to the Monarch butterflies’ annual migration? a. illegal logging c. airplanes b. co

ld winters d. new predators Please select the best answer from the choices provided A B C D
Biology
2 answers:
alina1380 [7]2 years ago
8 0

A. illegal logging

Good luck!

nika2105 [10]2 years ago
7 0

Answer: Option 'A' is correct.

Explanation:

The biggest threat to Monarch butterflies is illegal logging in Mexico.

Illegal logging of butterflies has been increased in the previous years, during that period, monarch butterflies were sold illegally in violation of national law.

Now, the government starts eradicating illegal logging from the root.

Hence, option 'A' is correct.

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Except for __________ and __________, prenatal diagnosis should not be used routinely, since other methods have some chance of i
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The answers that best fit the blanks are MATERNAL BLOOD ANALYSIS and ULTRASOUND, respectively. In prenatal diagnosis, there are certain methods that should not be done routinely for the reason that these may injure the fetus, except for routine ultrasound, which checks the status of the fetus, and maternal blood analysis, which assesses the current status of the mother.
4 0
2 years ago
Which is a difference between proteins and carbohydrates and fats?
morpeh [17]

Answer:

HERE JUST TAKE IT

Explanation:

Ok, there's carbon and hydrogen in all of them, that's the only similarity. They are known collectively as macro-nutrients.

Carbohydrates are basically, oxygen, carbon and hydrogen and they're the bodies primary source of energy. This means that they're the first source of energy used which is why if you eat foods high in simple sugars you get a sugar rush. All carbs metabolize down to glucose, some faster than others.

Fats are called lipids. Lipids are very heterogeneous (this means that there's not much similarity between them). Some examples of lipids are steroids, seed oils, pork fat, cholesterol, etc. The main thing in common with them is that they don't mix with water. They are readily stored in fat cells in the form of tryglicerides and are used when carbs are all used up. They also yield the highest per gram amount of energy (it escapes me right now).

In a chemical sense, fats are lipids derived from animals (saturated, solid at room temperature) and oils are derived from plants and seeds (insaturated with some exceptions, and liquid at room temperature. Insaturated are healthier because they contain HDL which cleans your arteries (prevents artherosclerosis).

Proteins are made up of aminoacids, 20 make up the vast amount of human proteins. Enzimes (the most famous being digestive enzimes) are proteins, skin is covered in protein, hair is protein, cilia and flagella are protein, basically EVERYTHING is protein, after water the human body is basically protein. They're only used up as energy when everything else is used up.

When athletes eat/drink protein, it's to give them building materials in order to increase the amount of stuff inside their cells which will enable them to produce more energy.

5 0
2 years ago
In vertebrates with a double-loop circulation as illustrated in Figure 27–4, the loop that passes through the lungs is responsib
egoroff_w [7]
The correct answer among the choices provided is option A. Lung capillaries are responsible for exchanging carbon dioxide for oxygen from the air. Blood that comes from the heart gets oxygen from the alveoli. The carbon dioxide in the blood goes into the alveoli at the same time.
3 0
3 years ago
Read 2 more answers
Most extinction is ________.
Maksim231197 [3]

An extinction event is a well-known and quick decrease in the biodiversity on Earth. Such an occurrence is recognized by a sharp change in the diversity and abundance of multicellular organisms. It happens when the rate of extinction surges with respect to the rate of speciation. In other words, this happens when species cannot adapt generally to the change in the environment. So the correct answer would be letter a.

7 0
2 years ago
How does the structure of a saturated fatty acid differ from an unsaturated fatty acid?
tia_tia [17]

Answer:

Saturated fatty acids have all of their carbon atoms bonded to hydrogen atoms.The lipids containing saturated fatty acid are solid at room temperature

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Explanation:

I hope this will help you

6 0
3 years ago
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