Explanation:
An element is a substance that is made up of only one type of atoms. It cannot be broken down into simpler substances.
For example, sodium, aluminium, nickel etc are all elements.
Whereas when two or more different elements combine together then it results in the formation of a compound.
For example, is a compound.
Therefore, we can conclude that a substance that cannot be broken down into simpler substances by chemical or physical means is called an element.
Answer:
Answer 9 - 100 joules energy was at the producer level
Answer 10 - Remaining energy is used in metabolism
Explanation:
Answer 9
The energy at each trophic level is only 10% of the energy at its previous trophic level.
The energy at producer level is X
% of
Joules
Joules
Answer 10
Because the remaining 90% energy is utilized by the producer for its metabolism
Answer:
See explanation below
Explanation:
This mechanism of polimerization is of one type. This mechanism goes through free radical polimerization, which means that we use a initiator as the radical source, then, the polimerization begins with the breaking of the covalent bonds of that initiator. In this case the benzoyl peroxide. And this mechanism is given in three steps.
In the picture you have the mechanism in the 3 steps:
