They are both types of cellular respiration.
Answer:
The correct answer is option c, that is, variation.
Explanation:
In the given case, the gravel mix is to be selected on the basis of the size of pebbles, which is analogous to the organism selected in nature. In the given question, the sorting machine is analogous to the environment, that is, a selective force.
Like a specific environment permits the organisms exhibiting specific traits. For example, in a desert where the environment is hot and dry, only the species exhibiting the tendency to conserve water can thrive, similarly sorting machine will permit to distinguish gravel on the basis of the pebble size. Thus, different size of pebble resembles variation.
The feature of the immune system which is best described by this scenario which involves engulfing of bacterial cells is the phagocytotic barrier, which is a part of innate immunity and is denoted as option B.
<h3>What is Immune system?</h3>
This is part of the body which is responsible for protection and helps to fight germs and diseases through the white blood cells which are present in the body system.
The immune system comprises of macrophages which engulfs the pathogen through the process known as phagocytosis which is why phagocytotic barrier which is a part of innate immunity was chosen as the correct choice.
Read more about Immune system here brainly.com/question/6612564
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The Earth is a ball in space that spins around while travelling/ rotating around the sun.
When one side of the Earth is facing the sun we call this day. When the other side of the Earth is facing away from the sun or in space, we call it night. One side is bathed in light and warmth, while the other is covered in darkness and cold.
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Answer:
A.) Adding a positive catalyst.
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