Simple. Air has mass. And if air has mass it also has weight. You can feel air when the wind blows. Or do an experiment. Weigh an empty container. Then pump it to a vacuum. Weigh it again. The difference is the weight of the air inside.
Microorganisms that are involved in the nitrogen cycle are able to break the triple of elemental nitrogen using special enzymes that they have developed and make ammonium. Other organisms like plants are unable to break the triple bond and therefore rely on these microorganisms so that they can absorb the ammonia
Research has demonstrated that people will help in-group members because they have feelings of empathy.
<h3>What is empathy?</h3>
Empathy is an emotion that helps people to understand the situation in which another person lives.
Empathy also helps to develop healthy groups and communities and it is an evolutionary feature.
In conclusion, research has demonstrated that people will help in-group members because they have feelings of empathy.
Learn more about empathy here:
brainly.com/question/16253958
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Answer:
Four cell processes that all living cells need energy for include:
Cell Division
Synthesis
Transport
Breakdown of Nutrients
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