They give us the energy we need to move and to speak and to live they do that for all the organisms on earth
A cell membrane is c.selectively permeable because it regulates what materials enter the cell.
Answer:
The gastrovascular cavity is a structure found in primitive animal phyla. It is responsible for both the digestion of food and the transport of nutrients throughout the body. The cavity has only one opening to the environment. Food goes in and waste comes out that same opening, making it a two-way digestive tract
Explanation:
How did stromatolites contribute oxygen to the early atmosphere?
by weathering of rocks
through photolysis
through methane degradation
through photosynthesis
Answer:
by weathering of rocks
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Answer : cathode, protocathode
During an electrochemical reaction, electrons move through the external wire toward the cathode and positive ions in the salt bridge move toward the protocathode.
