Geologists have divided Earth's history into time units, which are largely based on?

1 answer:

8 0

I think the correct is. Geologists have divided Earth's history into time units, which are largely based on fossil records. In the context of Earth's history, time is generally divided on the basis of biotic composition which are recorded by the fossils being discovered.

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Food handlers are not allowed to wear fingernail polish while handling food with bare hands unless _____. they are wearing glove

Archy [21]

The statement above is TRUE. Food handlers are expected to keep their nails short and trimmed; this is because the microbes under nails can be a great hazard to the food that is been prepared. Food handlers are not expected to wear nail polish or put on artificial finger nails and if they do, they must put on single use gloves.

3 0

2 years ago

This is part of the autonomic nervous system that functions to conserve body resources and maintain homeostasis ("rest and diges

denpristay [2]

Answer:

Parasympathetic nervous system

Explanation:

The parasympathetic nervous system of the autonomic nervous system is activated to restore the body's energy level after the emergency conditions. This division of the autonomic nervous system triggers the digestion and absorption of nutrients so that body cells obtain and conserve energy.

Some of the responses generated by activated parasympathetic division are increased activity of glands associated with the digestive system and increased the contraction of smooth muscles of the digestive tract. The parasympathetic nervous system also slows down the responses required for physical activities such as heart rate and breathing rate.

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3 years ago

To map genes of a bacterial strain, conjugation must be interrupted at given times. Suppose you have Hfr cells of genotype a+b+c

OLEGan [10]

Answer:

The answer is not in any of the options and is the following:

to eliminate any remaining Hfr cells.

Explanation:

In a medium that has a streptomycin antibiotic it is used to kill Hfr donor cells after the conjugation is interrupted. This is entirely due to the streptomycin sensitivity allele (str-s) which are found in Hfr strains. The presence of the streptomycin resistance allele, located in the receptor, is used for the specific destruction of Hfr donor cells after conjugation occurs.

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2 years ago

hummingbirds have small, weak feet and rely on their strong wings to move from one place to another. Describe how a disease affe

neonofarm [45]

The muscular system of an organism controls the organism’s muscles. When a hummingbird’s muscular system is affected, the muscles will become weak from a disease and they will potentially die because they will not be able to survive without the strong support of their legs or any other muscle in its body.

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2 years ago

A group of antelope leaving the herd in search of better grassland is an example of

PtichkaEL [24]

Answer:

emigration

Explanation:

The emigration of an animal, in this case of the antelope, is the cause of the lack of food.

The animals are in constant search of food and better places to cohabitate. Antelope is leaving its herd to find a better place for food and even if it sounds strange, animals are also behaving as individuals in case there is threatening of hunger.

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2 years ago