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vivado [14]
2 years ago
7

What is the oxygen cycle ?

Biology
1 answer:
icang [17]2 years ago
3 0
  • Oxygen cycle is the cycle which maintains the level of oxygen in the atmosphere.
  • Oxygen from the atmosphere is used up during combustion, respiration and in the formation of oxides of nitrogen.
  • This oxygen is returned to the atmosphere by lithosphere.
  • This forms the oxygen cycle in nature.

Hope you could get an idea from here.

Doubt clarification - use comment section.

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Match each image with the life function the organism is performing. 1.reproduction
Lorico [155]

Answer:

1. Obtaining energy

2. responding to a stimulus

3. reproduction

4. excretion

Explanation:

1. All living organisms require energy for their life processes. This energy is derived from food. The food we eat contains biomolecules that store energy. The energy stored by these food molecules is released by a process called RESPIRATION. Image 1 shows a cat trying to obtain energy by feeding. The food will eventually be broken down to release energy.

2. Stimulus is any thing (whether internal or external) that causes a change in an organism. In image 2, a man is responding to a sudden change in his back, which is pain.

3. Reproduction is a characteristics of living organisms that involves the production of young ones. Image 3 depicts two cells undergoing fertilization (fusion of nuclei) to produce a new cell. In turn, the cell divides again to form two gametes. The cycle continues like that.

4. Excretion is the removal of waste products from a cell. According to Image 4, the cell allows a food particle in and releases the waste contents out of the cell.

5 0
2 years ago
Read 2 more answers
A patient who takes imipramine has a moderate infection with p.vivax that is chloroquine resistant.
goldfiish [28.3K]
The patient would take a combination of atovaquone and proguanil. Both combined are effective for the treatment of c<span>hloroquine-resistant malaria.</span>
6 0
3 years ago
A rocket is launched to a height of 210 kilometers above sea level. What level of the atmosphere has it entered?
taurus [48]

<u>Answer:</u>

The rocket has entered the thermosphere.

<u>Explanation:</u>

Thermosphere starts at around 90 km to 1000 km above the sea level. It is present between Mesosphere and Exosphere, The temperature climbs sharply from lower to higher and it get impacted by the solar temperature heavily. In the lower level of thermosphere almost till 500 km resides the ionization/ ionosphere. This area is ionized by solar activities and the cause of Aurora.

So if the rocket launched the height of 210 km, so it has reached the thermosphere and might also touched the ionosphere and aurora  

6 0
3 years ago
The thin muscle that separates the thoracic and abdominal cavities is the __________ .
Zanzabum
Answer: diaphragm

Explanation:
The diaphragm separates the thoracic cavity from the abdominal and pelvic cavity.

The diaphragm is a sheet of internal skeletal muscle located below the thoracic cavity that houses the heart and lungs. Below the diaphragm is the abdominal cavity.

The diaphragm plays an essential function for respiration. When the diaphragm contracts, the volume of the thoracic cavity increases so that air is drawn into the lungs.
8 0
3 years ago
Gene flow and genetic drift both affect allele frequencies in a population. A high level of gene flow into a population genetic
DaniilM [7]

A high level of gene flow into a population increases genetic diversity in a population. A high level of gene flow out of a population decreases genetic diversity in a population. Genetic drift is the change in allele frequencies due to "sampling error" factors. Typically, genetic drift has the biggest impact on small populations.

Gene flow (or gene migration) is a mechanism of evolution (change the allele frequencies) which transfers genetic variation among populations due to migration. High level of gene flow decreases the genetic differentiation between the two populations.

Genetic drift is a mechanism of evolution that acts by chance (“sampling error”) often when a population is reduced in size by a natural disaster (bottleneck effect) or when a small group leaves the main population and forms a colony (founder effect).


8 0
3 years ago
Read 2 more answers
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