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Anit [1.1K]
3 years ago
15

What are the 2 main ideas behind natural selection? (will give brainlist!)

Biology
1 answer:
ioda3 years ago
7 0

1-Charles Darwin

2-Alfred Russel Wallace

Explanation:

are jointly credited with coming up with the theory of evolution by natural selection, having co-published on it in 1858. Darwin has generally overshadowed Wallace since the publication of On the Origin of Species in 1859, however.

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Airplanes reach cruising altitudes at the lower part of the Earth's stratosphere. This portion of the atmosphere is made up most
Lerok [7]

Answer:

The stratosphere is a layer of Earth's atmosphere. ... The troposphere, the lowest layer, is right below the stratosphere. ... Because of this, jet aircraft and weather balloons reach their maximum operational altitudes within the stratosphere. ... from the bottom of the stratosphere up to altitudes of 40 or 50 km (25 to 31 miles).

Explanation:

6 0
3 years ago
Which statement BEST describes why mycelium, constructed of hyphae, are necessary for fungi survival?
mariarad [96]

Answer:

Hyphae absorb nutrients from the environment and transport them to other parts of the thallus.

Explanation:

The large volumes of hyphae within the mycelium perform a fundamental role by obtaining nutrients from the organic substrates from the surrounding of the fungus. Hyphae play different kinds of functions in fungi.

They contain cytoplasm or cell sap. They also contain the nuclei, which include genetic material. Hyphae absorb nutrients from the environment and transport them to other parts of the thallus.

The thallus is the fungus body in which the fungi live or from beneath the soil to give support to the fungi for its growth and its survival.

5 0
3 years ago
A group of scientists are studying the effects of different fertilizers on the growth of pea plants. They began their study with
katrin [286]
A control group of the experiment is the one in which no treatment or intervention is given. So, in your case, the pea plants in which was not subjected any of the fertilizers, will serve as a control group. This is a negative control. A positive control group is the one in which an established treatment is given, which definitely leads to the production of the desired character. So, in your case, a very good well-known fertilizer which has a positive control on the growth of the pea plant, would serve as a positive control.
8 0
3 years ago
A personal trainer observes a client's knees moving inward while performing the overhead squat assessment. Which of the followin
guajiro [1.7K]

Answer:

Option C

Explanation:

Gastrocnemius and soleus muscles are jointly known as calf. Gastrocnemius is the larger muscle and connects to the knee joint while soleus is smaller muscle that connects to the portion of leg just below the knee. When gastrocnemius is stretched, the knee remains straight while when the soleus is stretched the knee bends. If a person feels difficulty in bending or stretching the knees, he/she must be facing the problem with the calf muscle. Hence, Option C is correct

7 0
3 years ago
Help! Will give brainlist
irinina [24]
Answer: B

Explanation: So air, like most other substances, expands when heated and contracts when cooled. Radiation cooling occurs when air near the ground is cooled by the Earth's surface losing heat by radiation.
6 0
3 years ago
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