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Goshia [24]
3 years ago
14

Scientists lack enough evidence to conclude how the first organic molecules formed or arrived on

Biology
1 answer:
guapka [62]3 years ago
6 0

<u>Answer</u>:  Option C

<em>The outcome of the Miller-Urey experiment and similar experiments supports that during a lightning strike, chemicals in the atmosphere reacted to form amino acids.</em>

<u>Explanation:</u>

Scientists think that lightning sparked chemical reactions in <em>Earth’s early atmosphere. </em>

The early atmosphere of earth consists of gases such as <em>ammonia, methane, water vapour, and carbon dioxide.</em>

The scientists used a mixture of gases to show the <em>earth’s early atmosphere. </em>Then the scientists developed sparks through the <em>gases to show lightning. </em>

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How do muscels become bigger? Describe what is happening to the muscle fibers over time?​
Gnom [1K]

Answer:

When people lift weights, microscopic damage (microtears) occurs to the myofibrils within the muscle fiber. These microtears stimulate the body's repair response. ... The increased number of myofibrils causes muscle fibers to enlarge, increasing their volume and size.

Explanation:

6 0
3 years ago
A food chain contains oak trees (producer), mice (herbivore), black rat snakes (carnivore), and bald eagles (carnivore). How man
VMariaS [17]

Answer:

It has 4 trophic levels.

Explanation:

The first level would be the producers, followed by the primary consumers, then the secondary consumers, then the tertiary comsumers.

              /    Tertiary consumers          \

           /   Secondary Consumers           \

        /    Primary Consumers                     \

     /           Producers                                   \

 /________________________________\

5 0
3 years ago
What human activities affect the water, carbon, and the nitrogen cycle what are the consequences
Mademuasel [1]
The nitrogen cycle is impacted by humanswhenever fertilizer is applied to farmland to help crops grow. This adds nitrates to the soil. If soil erodes, the nitrates are transported and deposited in the nearest body of water. This can cause algae to overgrow in a process called eutrophication. The lake will run out of oxygen as the algae die off and bacteria begin their decomposition.Sessile organisms are greatly affected. 
8 0
3 years ago
True or false: Quartz will scratch minerals in the list, numbered 1 through 6.
krok68 [10]

Answer:

True

Explanation:

On the Mohs hardness scale, Quartz is a 7, therefore it should be able to scratch through any minerals numbered 1 through 6

8 0
3 years ago
A person with type A blood (AO) is crossed with
riadik2000 [5.3K]

Answer:

25% type A, 25% type B, 25% type AB, 25% type O

If you put it into a punnett square:

          B                  O

A        AB                 AO

O       BO                 OO

you get 25% for each phenotype

7 0
2 years ago
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