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Ilya [14]
3 years ago
7

4. How does a sound wave vibrate?

Biology
1 answer:
gavmur [86]3 years ago
6 0
When sound waves move through the air, each air molecule vibrates back and forth, hitting the air molecule next to it, which then also vibrates back and forth. The individual air molecules do not "travel" with the wave. They just vibrate back and forth.
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It is projected that an increase in carbon dioxide levels in the atmosphere will MOST LIKELY lead to
babunello [35]

The right answer is higher-than-average sea levels.

With the rise in CO2 level that caused an increase in air temperature and sea surface temperatures. At this time, they were the highest ever recorded. In addition, the rise in mean sea level continued and the extent of Arctic sea ice was well below normal for most of the year.

7 0
3 years ago
Read 2 more answers
2.Which of the following represents a genetic cross between 2 individuals that are each heterozygous for both traits?
wariber [46]

Answer:

A. AaBb x AaBb

Explanation:

The term heterozygous refers to the presence of two different alleles of same gene in an organism. The one allele can be of wild type (original type) and one can be mutated or newly formed.

In the question, two traits are represented by two letters, A and B and alleles as A and a and B and b, respectively. We are asked about a cross involving two traits and two individuals in such a way that both are heterozygous.

If we look at option A, AaBb x AaBb,

we see that one trait A and the other trait B is in heterozygous form (Aa and Bb) in both individuals.

If we look at option B. AABB x AABB

we see that one trait A and the other trait B is in homozygous form form (AA and BB) in both individuals. Homozygous means when the alleles are same for each trait in an individual.

If we look at option C,Aa x Bb

There are not two traits, one trait of one individual and other trait of other individual is being crossed that is not possible.

If we look at option D. AAaa x BBbb

Again, the individuals are homozygous for two traits.


Therefore, A is best option.


Hope it helps!

7 0
3 years ago
WILL MARK BRAINLIST IIF U GIVE ME CORRECT ANSWERS
zzz [600]

Answer:

  1. A
  2. C

Explanation:

  1. The greater the frequency, the <em><u>more</u></em> energy carried by the wave.
  2. Wave with high frequency has a <em><u>high</u></em> energy and <u><em>low</em> </u>wavelength.

(≧▽≦)

6 0
3 years ago
In cell division one difference between animals and plants is that plant cells have a
ExtremeBDS [4]
Plant cells have cell walls while animal cells don't
6 0
3 years ago
Read 2 more answers
Question 4 (Multiple Choice Worth 3 points)
sweet-ann [11.9K]

The creation of DNA fragments with ends that can join with other DNA is achieved by the use of restrictive enzyme analysis.

<h3>What are restriction enzymes?</h3>

They are enzymes utilized in genetic engineering or gene recombination technology to cut DNA at some specific points in other to have sticky ends.

The sticky ends DNAs are able to join with other DNAs using these ends. Another enzyme (Ligase) is utilized to join the DNA back once the desired DNA has been inculcated.

More on restriction enzymes can be found here: brainly.com/question/13944056

#SPJ1

8 0
2 years ago
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