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aivan3 [116]
3 years ago
11

According to the Miller-Urey Experiment, what materials existed in Earth's early atmosphere​

Biology
1 answer:
brilliants [131]3 years ago
6 0

Answer:

The experiment used water (H2O), methane (CH4), ammonia (NH3), and hydrogen (H2).

Explanation:

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Current and ______________ cause water motion.
masya89 [10]

Answer:

<u><em>Current and WIND</em></u><u> cause water motion. </u>

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3 0
4 years ago
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When performing rescue breathing, be sure to always ____ the head before performing breaths?
Gnoma [55]
When performing Cardiopulmonary Resuscitation or CPR you have to follow the following steps:

1. Make sure that the scene or environment is safe.
2.Tap the patient and ask if he/she is okay, if the victim is non-responsive proceed to CPR.
3. First, perform the head-tilt chin-lift maneuver to open the airway.
4. Start by giving 30 chest compressions and 2 breaths thereafter. Watch for response from the patient and if there is none, repeat the cycle.

Therefore, when performing rescue breathing, tilt the head of the patient.
4 0
3 years ago
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If part of a chain of DNA has the sequence of bases: ATTG, what is the corresponding sequence of bases that it binds to on the o
LenKa [72]

Answer:

TAAC

Explanation:

A binds to T, T binds to A, and G binds to C. If the other chain is an mRNA chain, it will be UAAC.

3 0
3 years ago
5.Write observation and conclusion of each of the following activities​
Tomtit [17]

Answer:

Water puts pressure depends on their amount.

Explanation:

On the left side, there is less quantity of water in the tube that put less pressure on the bag present at the bottom and the bag swells slightly while on the other hand, on the right side, there is more amount of water in the tube that puts large pressure on the bag located at the bottom and as a result it swells higher than the other bag so we can conclude that more water puts more pressure and less water puts less pressure.

3 0
3 years ago
What is an allele frequency determined by? The proportion of a genotype (i.e., AB) in a population The survival rates of individ
Zinaida [17]

Answer:

The proportion of a genotype (i.e., AB) in a population.

Explanation:

  • Every trait is controlled by some alleles and their combinations. Allele frequency determines the frequency of occurrence of a particular allele in a population.
  • It can be determined by genotype frequency or proportion of a particular genotype in a population. As a genotype is a result of various alleles coming together, its frequency can help us to calculate the allele frequency.
  • For example, in a population with two alleles A and B, A allele can either occur as AA or as AB. To calculate the frequency of A we will have to calculate the genotype frequencies of AA and AB.  
8 0
4 years ago
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