Answer:
A difference between plant cells and animal cells is that most animal cells are round whereas most plant cells are rectangular. Plant cells have a rigid cell wall that surrounds the cell membrane. Animal cells do not have a cell wall.
Explanation:
Plant cells are eukaryotic cells or cells with a membrane-bound nucleus. A plant cell also contains structures not found in an animal cell. Some of these include a cell wall, a large vacuole, and plastids. Plastids, such as chloroplasts, assist in storing and harvesting needed substances for the plant. Animal cells are eukaryotic cells that have both a membrane-bound nucleus and other membrane-bound organelles. These organelles carry out specific functions that are needed for the normal functioning of the cell. Plant and animal cells are similar in that they are both eukaryotic and have similar types of organelles.
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Mutagens- vectors are things that carry diseases (e.g mosquitoes), pathogens are just germs and bacteria, agents are things which cause changes, whereas Mutagens are agents which cause genetic mutations
The Earth's tilt on it's axis
The idea needs to be tested for it to be scientifically reliable. First, a hypothesis has to be drawn up. A simple explanation for the word "hypothesis" is an educated guess. The scientist makes an educated guess in answer to a problem. He then sets about proving or disproving the hypothesis. This is done by setting up related scientific experiments. <span>For the theory to be scientifically proved, the experiments need to be set up in such a way that the results are measurable. </span>
Vertebrates that are cold-blooded, have dry skin and scales and usually lay eggs are classified as reptiles. For example, lizards are considered a part of this group.