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gavmur [86]
3 years ago
14

What state best describes natural selection

Biology
1 answer:
baherus [9]3 years ago
8 0

Answer:

Louisianna

Explanation:

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Locomotion in Metazoa is usually due to the contraction of what? a. Skeleton b. Muscle c. Skin d. Nerves
Ede4ka [16]

Answer: b. Muscles

A metazoa is a division of animal kingdom that includes all animals expect protozoa and sponges. Metazoa division includes multicelluar animals, which exhibit highly differentiated cells. They have muscular and nerve system and well coordinated tissues and organs. Locomotion requires a coordination activity of muscular, skeletal and neural system. It is mainly achieved by contraction and relaxation of muscles that occurs due to specialized muscle proteins named as actin and myosin which receives signals from nerves.

Hence, locomotion in metazoa is due to contraction of muscles.

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3 years ago
During sleep, the body provides fuel to the brain during sleep, the body provides fuel to the brain by breaking down body protei
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The answer to this question would be: <span>by converting glucose to glycogen. 

Brain cells only able to use energy from glucose, so if the body glucose level is too low the brain cells can't work as it doesn't get any energy/food. When glucose level is decreased, the liver will start to convert glycogen into glucose to keep the glucose level.</span>
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3 years ago
Identify the inheritance mode of each condition by using the labels to complete the table. labels can be used once, more than on
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4 0
3 years ago
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What refrigerant safety group classification has the highest flammability and the highest toxicity?
timama [110]

Answer;

-B3

Explanation;

Refrigerants are divided into two groups according to toxicity:

-Class A signifies refrigerants for which toxicity has not been identified at concentrations less than or  equal to 400 ppm;  and

-Class B signifies refrigerants for which there is evidence of toxicity at concentrations below 400 ppm.

They are also divided into three groups according to flammability:

-Class 1 indicates refrigerants that do not show flame propagation when tested in air at 21°C and 101  kPa;

-Class 2 indicates refrigerants having a lower flammability limit of more than 0.10 kg/m3  at 21°C and  101 kPa and a heat of combustion of less than 19 kJ/kg;

-Class 3 indicates refrigerants that are highly flammable as defined by a lower flammability limit of less  than or equal to 0.10 kg/m3  at 21°C and 101 kPa or a heat of combustion greater than or equal to 19  kJ/kg.

-Therefore; the answer for the above question would be Class B and class 3.

3 0
3 years ago
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The model proposed by John Dalton was helpful in advancing our understanding of the atom. What aspect of his model was actually
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