<span>An element is a substance that cannot be broken into other substances further.An element is composed of one type of atoms all over. Like a molecule can be divided into atoms further. For example, Water is a molecule which is made up of Oxygen (O), Hydrogen (H). Here, Oxygen and Hydrogen are elements and cannot be further broken down into other substances.</span><span />
<span>by studying various pea plants</span>
Answer:
Our major catfish species spawn during spring or summer when the water warms to an optimal temperature. Channel and blue catfish spawn at 70-84 degrees, but 80-81 degrees is considered best. Flatheads spawn at 66-75 degrees. Catfish spawning begins at different times in different latitudes, progressing from south to north.
Explanation:
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<span>Chewing food Is both a Physical and Chemical change. Digestions begins in the mouth when food is chewed, it is mixed with enzymes from our spit (saliva) which is a chemical change and it breaks down the food. When you chew, You break the food into smaller chunks, making it more little and little as you chew which is a Physical change. </span>
