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Nitella [24]
2 years ago
13

Multiple choice please help!

Biology
2 answers:
hjlf2 years ago
6 0

Answer:

A=T is the answer ..............

slavikrds [6]2 years ago
6 0

Answer:

The correct answer is A) A=T

Explanation:

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4) Matching.<br><br> A new genetic trait can result from the___of chromosomes during____.
nydimaria [60]

Answer:

A trait is any gene-determined characteristic and is often determined by more than ... by mutated genes that are inherited or that are the result of a new gene mutation. ... A karyotype is a picture of the full set of chromosomes in a person's cells.

Explanation:

6 0
3 years ago
Displacement is different from distance because
Yuri [45]
<span>Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion. Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.</span>
8 0
3 years ago
Which muscles assist in inhalation when running up the stairs? A) sternocleidomastoid, pectoralis major, scalenes B) sternocleid
Ulleksa [173]

Answer:

Sternocleidomastoid, pectoralis minor, scalenes

Explanation:

During normal inhalation, contraction of the diaphragm and the contraction of external intercostals expands the chest cavity. The increased volume of the thoracic cavity results in reduced alveolar pressure than the atmospheric pressure to facilitate the flow of air into the lungs in response to the pressure gradient.

During deep inhalation as it occurs when running up the stairs, the accessory muscles of inhalation also participate to increase the volume of the chest cavity. The contraction of scalene and sternocleidomastoid muscles increase the volume of the chest cavity further to create a greater drop in alveolar pressure.

During forceful inhalation, the sternocleidomastoid muscles serve to elevate the sternum, the scalene muscles serve to elevate the first two ribs while the pectoralis minor elevate the third through fifth ribs.

7 0
3 years ago
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I need help please ASAP..
evablogger [386]
with which ones babe
3 0
2 years ago
Which of the following human activities would be expected to be the biggest contributor to air pollution?
sergejj [24]

The correct answer is (a) driving.

The pressence of undesirable substances in air is called as air pollution. There are many human activities that contribute to air pollution. The biggest contributor is driving. The pollutants that comes out of the car are carbon dioxide, carbon monoxide. They also release hydrocarbon and nitrogen oxides which when combines in sunlight becomes ozone. Air pollutants emitted by cars and other automobiles increases the level of harmful gases which to severe health problems such as heart disease, asthma, irritation in eyes.










4 0
3 years ago
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