Answer:
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Explanation:
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<em>When earth was first formed, its atmosphere was likely composed of hydrogen, helium, and other gases that contained hydrogen. Over a vast amount of time, millions of years, the earth gradually cooled. When the temperature dropped enough, water vapor condensed and went from a gas to liquid form. This created clouds.</em>
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Sunlight, because it provides a source of energy.
A prokaryote is an organism made from a single prokaryotic cell. The prokaryotes had arisen more than 2.5 billion years ago.Every eukaryotes has a cell membrane, ribosomes, and DNA
Answer:
They are different because ethanol is a compound that is made by a certain amount of carbon, oxygen and hydrogen, these are the elements that made up ethanol.
Explanation:
Think of it like this ethanol is a cake and carbon, oxygen and hydrogen is the eggs, flours and sugar that is used to make the cake.
Answer:
1. lysosomes
Explanation:
Lysosomes are a membrane-bound organelles with acidic interior that enables the function of hydrolytic enzymes. So, the main role of lysosomes is degradation of macromolecules. Low pH (about 5) is suitable for the action of enzymes involved in hydrolysis (hydrolases) and there are about 50 of them inside the lysosome. Beside macromolecules, lysosomes degrade organelles, but also can digest themselves via autophagy (e.g. when cell is under stress).
Lysosomes are also involved in plasma membrane repair, defend agains pathogens (macrophages), cell signaling, metabolism etc.