Directions: On the the fore each definitu win the letter of the term that makes it correcth Eerdere is used only one
4. a mix of rock, at water minerals and the
A. atmosphere
remains of once-living things
B. biotis factors
5. All lite needs it and is mostly composed of it. C soul
6. the living parts of an cosystem
D. waley
7. the layer of cases that surrounds Barth

the awnser is d i think

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.

other information encoded in your genes might distinguish you from the others in the group