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Semmy [17]
3 years ago
13

How do humans reproduce?\

Biology
2 answers:
djverab [1.8K]3 years ago
8 0
Humans reproduce through a method called sexual intercourse.
ehidna [41]3 years ago
8 0
Humans reproduce through sexual reproduction when a male gamete (sperm) fertilizes the female gamete (egg) therefore producing offspring
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Why are decomposers and detritivores essential parts of all food webs?
Vinil7 [7]

Answer: Detritivores improve the nutritional value and the texture of the soil: This makes the soil productive to plant life which translates to availability of food for the herbivores and carnivores like human beings. They however do not complete the energy cycle as their wastes are energy products that need to be decayed.

Decomposers help in converting the leftovers of animals and plants to useful substances for other living organisms. They are mainly bacteria and fungi. Have you ever wondered what would happen if the decomposers and consumers were not in the ecosystem?

Detritivores play a very important in the cycle as they are the consumers of dead leaves, old skin, carcasses and manure. They include millipedes, earthworms and slugs that feed on dead plants and animals but leave some parts and their feces that are converted to energy by the decomposers. Players in the energy cycle function hand in hand, a decomposer is found at the lowest part of the cycle as it deals with the remains. They complete the energy cycle. The roles of the decomposers and detritivores almost coincide.

Hope this helps !!! Good luck !!! ;)

8 0
3 years ago
Remember that eutrophication is the natural process by which a body of water gains an abundance of nutrients. Explain the distin
sergeinik [125]

Eutrophication occurs due to the increased concentration of natural nutrients. Conversely, artificial eutrophication happens due to human activities.

<h3>Eutrophication and artificial eutrophication</h3>

Eutrophication is a biological phenomenon that occurs due to the increased concentration of natural nutrients such as algae in a water body.

Artificial eutrophication is a specific type of eutrophication process caused by human activities.

Artificial eutrophication can be caused, for example, for an excessive overload of fertilizers in a lake.

Learn more about eutrophication here:

brainly.com/question/8499582

3 0
2 years ago
Why would plants have pigments that are not photosynthetically active
QveST [7]
Pigments absorb light used in photosynthesis.Set of wavelengths that a pigment doesn't absorb are reflected.
3 0
3 years ago
1. Why does the moon go through Phases?
liq [111]

Explanation:

1.The Moon has phases because it orbits Earth, which causes the portion we see illuminated to change. The Moon takes 27.3 days to orbit Earth, but the lunar phase cycle (from new Moon to new Moon) is 29.5 days. The Moon spends the extra 2.2 days "catching up" because Earth travels about 45 million miles around the Sun during the time the Moon completes one orbit around Earth.

2.

An eclipse is the result of the total or partial masking of a celestial body by another along an observer's line of sight. Solar eclipses result from the Moon blocking the Sun relative to the Earth; thus Earth, Moon and Sun all lie on a line. Lunar eclipses work the same way in a different order: Moon, Earth and Sun all on a line. In this case the Earth's shadow hides the Moon from view.Lunar and solar eclipses occur with about equal frequency. Lunar eclipses are more widely visible because Earth casts a much larger shadow on the Moon during a lunar eclipse than the Moon casts on Earth during a solar eclipse. As a result, you are more likely to see a lunar eclipse than a solar eclipse.

3.Why Do We have Seasons?

As the earth spins on its axis, producing night and day, it also moves about the sun in an elliptical (elongated circle) orbit that requires about 365 1/4 days to complete. The earth's spin axis is tilted with respect to its orbital plane. This is what causes the seasons. When the earth's axis points towards the sun, it is summer for that hemisphere. When the earth's axis points away, winter can be expected. Since the tilt of the axis is 23 1/2 degrees, the North Pole never points directly at the Sun, but on the summer solstice it points as close as it can, and on the winter solstice as far as it can.

Why Do the Seasons Change on Earth?

Two things cause the seasons to change. First, the Earth moves around the Sun. Second, the Earth has a tilted axis of rotation.

The Earth spins around an axis. This imaginary line extends from the South Pole to the North Pole. But the Earth’s axis is not vertical. It’s actually tilted at an angle of 23.5°. The planet is always tilted in the same direction as it orbits the Sun.

4 0
3 years ago
What information did gregor mendel know before he started his experiments?
mario62 [17]

Answer:

Mendel was a mathematician and a physicist. He was tutored by Christian Doppler known for his work "Doppler effect of wave frequency".

Mendel learned botany under Franz Unger.

Both knowledge of science and math helped him notice some patterns, traits and qualities in the gardens he had.

With that idea, he was able to see the chances or portability of developing such traits and how to prove it.

7 0
3 years ago
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