Answer:
The seismic waves in a 6.1 magnitude earthquake are 1000 times larger than those in a 3.1 magnitude earthquake
Abiotic means non-living. So the correct answer is "the lack of oxygen in coastal waters"
The <span>Hubble Space Telescope was the telescope that was launched in 1990.</span>
Answer:
3. the absence of a cell wall in human cells
Explanation:
Animal cells do not have cell walls. Cell membranes separate the cytoplasm of the animal cells from the surroundings and maintain their interior. Plant cells have cellulosic cell walls. A cell wall surrounds the cell membrane of a plant cell. Cell walls serve to provide structural support and protect plant cells from pathogens. Cell walls also help keep excess water out of cells so they do not burst. Therefore, human cheek cells would not have cell walls while the onion cells would have cell walls made up of cellulose.
