New
chemical- new substance
physical- just a state change
The answer is reproductive cells
Answer:
D. A nucleus
Carbon contains four electrons in its outer shell. Therefore, it can form four covalent bonds with other atoms or molecules. The simplest organic carbon molecule is methane (CH4), in which four hydrogen atoms bind to a carbon atom
Xylem and phloem are the two tissues that are found within a vein.
Xylem carries water, and phloem carries food, or glucose.
Answer:
Hey there
We know that A is correct so let's keep that in mind.
B is kind of correct because when you recycle you stop manufacturing materials which in itself releases greenhouse gasses. So yes B is possible.
C is incorrect because plants help reduce carbon emisions.
and well D quite frankly has nothing to do with that.
So lets say that <u><em>A and B</em></u> are the correct answers