From sea level,the biosphere goes up about 9km and down about 19 km. What is the thickness of the biosphere in meters?

Answers

Answer 1
Answer: 28km i believe but i could be wrong let me know if this helped or not:)


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Animals have four basic types of _________: nervous, epithelial, muscle, and connective.
Sickle-cell anemia is caused by a mutation in the gene encoding hemoglobin, causing red blood cells to appear A. half-moon shaped.B. like discs.C. spherical.D. long and stringy.

According to the law of Independence assorment​

Answers

Answer:

What what

Explanation:

The varicella virus is a common childhood virus that causes chicken pox. Shingles, a disease alsocaused by varicella, often occurs in adults. What does this indicate about the varicella virus?
It is a bacterioptrage.
It undergoes a lysogenic cycle.
H.
It does not contain a viral envelope.
J.
It does not kill host cells after infection.

Answers

Answer:

The correct option is : It undergoes a lysogenic cycle.

Explanation:

A virus can replicate inside a host cell by two process :

  • Lytic cycle
  • Lysogenic cycle

In the lytic cycle, the viral DNA makes copies of itself and manufactures the viral machinery inside the host cell. Eventually, the host cell bursts causing the release of the viruses. In such a condition the varicella virus would cause chicken pox.

In the lysogenic cycle, the DNA of a virus get incorporated into the DNA of the host. The viral DNA might replicate when conditions become favourable and cause diseases. In such a condition, the varicella virus would cause shingles.

18. In which physical change, energy is given?C) Boiling
A) Condensation
B) Evaporation
D) Melting

Answers

C. Condensation.

Boiling, evaporating, and melting all lose energy because that liquid is becoming less. For instance, water melts or could be boiled then it would evaporate. What happened to the water? It loss it's energy to continue to stay as water.

Condensation brings water back. That requires energy. Hope this helps!

Why was sputnik important?

Answers

This period of, Russia and the US both wanted to be the first person to reach the moon. Sputnik was made by the Russians and gave Russians a good head start to get to the moon . 

What structure do the cells of a maple tree and the cells of a beetle have in common

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Both plant cells and animal cells share characteristics such as nucleus, cytoplasm and a cell membrane. The nucleus controls what goes in and out of the cell, the cytoplasm is where cell activity and chemical reactions occur and the cell membrane holds the cell together.

Natural selection operates on populations over many generations. Which of the following allows natural selection to occur?

Answers

the unequal ability of individuals to survive and reproduce


Answer:the unequal ability of individuals to survive and reproduce

Explanation: