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Kobotan [32]
3 years ago
9

What is the unknown substance? Be sure to explain how you know

Biology
1 answer:
Lera25 [3.4K]3 years ago
3 0

Answer:

The last one

Explanation:

All other substances use their chemical name, not a generic name like the last one

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What is El Nino? How is it made? Where does it come from?
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an irregularly occurring and complex series of climatic changes affecting the equatorial Pacific region and beyond every few years, characterized by the appearance of unusually warm, nutrient-poor water off northern Peru and Ecuador, typically in late December.

6 0
3 years ago
If both the biceps and triceps muscle contract at the same time, what happens?
Gwar [14]

Answer:

when one muscle is contracted, the other muscle from the pair is always elongated. for example, the biceps and tricep muscles work together to allow you to bend and straighten your elbow. when you want to bend your elbow, your bicep muscle contracts. and at the same time tricep muscles relaxes.

Explanation:

Hope this helped Mark BRAINLIEST!!

3 0
3 years ago
Select the correct answer
coldgirl [10]

Answer:

c. adaptation

Explanation:

5 0
3 years ago
10. Researchers observe a large population of birds on a remote island. Birds in the population are found to have either red cre
IgorLugansk [536]
Suppose that the proportion of the white crest alleles (r) is given by w and that of the Red crest allele (R) is given by p. We have that p+w=1. The probability that an individual has 2 r alleles is given by w*w since for each allele position the probability is w. Only these individuals have a White phenotype. Hence, we get that w^2=\frac{1759}{1759+11088}; the right hand side is the proportion of white birds in the total population. Doing the calculations, this yields that w=0.37. From this, we calculate that p=0.63. The possible ways we have heterozygous individuals are the combinations Rr and rR. The probability for each of those is p*w. Thus, the total probability is 2pw. This is equal to 0.466=0.47. This is the fraction of the future population that is going to be heterozygous assuming the conditions of the Handy-Weinberg equilibrium like random reproductive matching etc.
7 0
4 years ago
6. explain the relationship between temperature and pressure. why do you think this occurs?​
olya-2409 [2.1K]

Answer:

The pressure of a given amount of gas is directly proportional to the temperature at a given amount of volume. When the temperature of a system goes up, the pressure also goes up, and vice versa.

Explanation:

This occurs because of the pressure temperature law. (or also known as the Gay-Lussac's law)

7 0
3 years ago
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