Answer:
D. a shark tooth
Explanation: A shark tooth is an example of a body fossil as body fossils mostly consists of hard parts such as teeth, bones, shells, woody trunks or branches, and stems.
A beneficial human advancement is the insertion of a foreign gene into the DNA and being able to alter it, which can lead to both insect and disease-resistent crops which would lead to a higher yield of crops. This can be seen as the care of many genetic disorders. However, it is widely criticized due to ethical concerns and the capability to produce designer babies.
Answer:
In order from the first blank:
a
a
c
c
b
c
and I can't see the choices for the last one
Explanation:
A system means a group of things that are together
