Element describes a pure substance that is made up of only one type of atom. Elements cannot be broken down into more simpler substances. There have been 118 elements discovered by scientists so far.
Answer:
A
Explanation:
You need to use prosses of elemination considering that I have no clue what the model looks like. It can't be B because its a "small model" of the palm tree. I don't belive it to be C because Devon is holding a "model" of a palm tree. And I don't belivie it to be D because once again its just a model. Hope this helps!
Answer:
D. Identical twins share the exact same DNA, but fraternal twins do not.
Explanation:
Identical twins are the twins formed from one egg provided by their mother and one sperm provided by their father. In contrast, fraternal twins are formed from two different sperms and two different eggs from the same father and mother.
Due to the fact that identical twins are as a result of one fertilized egg dividing into two, they share the same exact DNA. On the other hand, fraternal twins do not share the same exact DNA because they are formed from separate eggs and separate sperms.
Around 1.5 billion years after prokaryotes.