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3 years ago

Which quantity does a light year measure

Biology

1 answer:

nignag [31]3 years ago

4 0

Answer:

distance = 9.46 trillion kilometers

Explanation:

Light years measure distance and is a unit that equals the distance light travels through space in one year on Earth (365 days) and is used as way to measure extremely vast distances in outer space. It equals 9.46 trillion kilometers.

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All cells come from living things. True or false?

Alenkasestr [34]

Answer:

True

Explanation:

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3 years ago

Medical professionals are concerned with the increase in the number of bacterial species that are resistant to antibiotics. Once

valentina_108 [34]

Answer:

Resistance bacteria survive in greater numbers and pass the trait to their offspring

Explanation:

Antibiotics are chemicals which are used in the treatment of bacterial infections. The bacteria sometimes have some form of immunity or resistance to a particular antibiotic due to a host of underlying factors.

Once resistance appears in a bacterial population, it spreads rapidly. The trait of immunity or resistance to such antibiotic is then passed as a trait from one generation to another.

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3 years ago

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What are the three possible outcomes for species when rapid environmental changes occur

Montano1993 [528]

Rapid environmental changes can cause:

1) Species can become vulnerable to extinction.

2) A decrease or increase of populations.

3) Diversity of species.

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3 years ago

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Which of the following is an abiotic factor that shapes a marine ecosystem? a. fish c. depth b. kelp d. coral

olasank [31]

Answer: c depth hope it helps!

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3 years ago

The diagram shows structures found in a seed plant. What is the function of labeled X

Alja [10]

Question is incomplete. Complete question has been attached.

Answer:

carries food produced by leaves

Explanation:

The diagram is a cross section of stem of a dicot plant, specifically <em>Hypericum perforatum</em>. It shows all the structures present in the stem like xylem, phloem, pith, cortex etc. The structure labelled X is phloem. It is present between xylem (stained red) and peripheral cortex. Phloem is responsible for conduction of sugars and nutrients in the plant thus it carries the food produced by leaves. Together xylem and phloem make the vascular tissue which surrounds the central pith (stained bluish-green).

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3 years ago