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Pavlova-9 [17]
3 years ago
9

Which of these mechanisms of evolution maintains the genetic diversity of a

Biology
1 answer:
Sidana [21]3 years ago
7 0
It could be natural selection or genetic drift
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What is considered the fundamental unit of life?
galina1969 [7]

The correct answer is E. A cell

Explanation:

The cell is the smallest unit of life that exists and that constitutes all living organisms and body tissues including unicellular and multicellular organisms. Due to this, cells are considered as the fundamental unit of life as even the smallest and simplest living organisms are made of cells or at least made of one cell.

Cells are commonly made up of three main parts: the cell membrane which surrounds the cell and controls the substances that enter and leave it; the nucleus which is the structure within the cell that contains the nucleolus and most of the cell's DNA; and the cytoplasm that is the fluid inside the cell that contains other tiny cell particles with specific functions, such as the Golgi apparatus, mitochondria, and the endoplasmic reticulum. This applies to all cells except to prokaryotic cells because these do not contain a nucleus but a chromosome in the middle of the cell.

5 0
4 years ago
Any object struck at its natural frequency will vibrate violently. This is known as resonance. Applications of this include eart
Umnica [9.8K]

Answer: option D) sound being created in music instruments

Explanation:

Resonance occurs when an object close in contact to a vibrating body begins to vibrate at the same frequency of the vibrating body.

Usually each object has a THRESHOLD frequency which must be equaled or exceeded before it is set into vibration.

Therefore, this is the PRINCIPLE behind MELODY i.e how sound is being created in music instruments.

6 0
4 years ago
How high is the ceiling in a school gym if a volleyball thrown upward from the floor at 15 m/s barely touches the ceiling before
Harman [31]

The height of the ceiling in the school gym from the floor is 11.48m.

HOW TO CALCULATE HEIGHT OF A PROJECTILE:

  • Using one of the equations of motion as follows:

v² = u² + 2as

Where;

v = final velocity (m/s)

u = initial velocity (m/s)

a = gravitational acceleration (m/s²)

s = distance traveled (m)

According to this question,

  • The final velocity (v) of the volleyball is 15m/s
  • The initial velocity is 0m/s
  • The acceleration due to gravity is 9.8m/s

Using the formula, v² = u² + 2as, the height of the ceiling (s) can be calculated as follows:

15² = 0² + 2 (9.8) (s)

225 = 0 + 19.6s

225 = 19.6s

s = 225/19.6

s = 11.48m

Therefore, the height of the ceiling in the school gym from the floor is 11.48m

Learn more: brainly.com/question/21065813

5 0
3 years ago
Read 2 more answers
Which level of producers or consumes would be MOST affected by trace amounts of pesticides, like DDT, that run off into lakes, s
den301095 [7]

The secondary level of consumers will be affected trace amounts of pesticides, like DDT, that run off into lakes, streams and ponds.

<h3>What are Producers</h3>

Producers are mainly plants that undergo photosynthesis to produce carbohydrates and oxygen.

<h3>Consumers</h3>

Consumers are herbivores or canivores or omnivores that feed on primary producers like plans and others.

  • Consumers can be primary which feed on plants examples are goats.
  • Secondary consumer are canivores that feed on meat of other animals, they feed on primary consumer.
  • Tertiary consumers feed on both plants and meat of other plants.

Therefore, The secondary level of consumers such as fish will be affected trace amounts of pesticides, like DDT, that run off into lakes, streams and ponds because they live in water and their food is in water. Once the substances are in their water, it will become toxic and can lead to their deaths.

Learn more about producers and consumers from the link below.

httos://brainly.com/question/995103

5 0
2 years ago
Are volcanoes typically found near plate boundaries? HELP PLEASE
True [87]

Answer:

Yes.

Explanation:

They are normally found near plate boundaries and how they form is: When two of those plates meet, one is pushed underneath the other and eventfully a volcanoes is created. Soon hot magma reaches the surface. This molten rock then rises and erupts on the surface building up a volcano. Hope this helps! :)

3 0
3 years ago
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