Answer:
D. Hydrogen combines with oxygen to form water.
Explanation:
Hydrogen combining with oxygen to form water is a typical example of chemical reaction.
During a chemical reaction, atoms of elements are rearranged. Most chemical reactions obey the law of conservation of mass which states that "matter is neither created nor destroyed in a chemical reaction but atoms are simply rearranged".
The other choices given are nuclear reactions. In such reactions, atoms are not rearranged but are simply destroyed and made in the process.
Solution :
Part A .
Given : The
and
components of the vector, d =
degree left of
-axis.
So the
component is = -4 x sin (29°) = -1.939 km
component is = 4 x cos (29°) = 3.498 km
Part B
Given : The
and
components of the vector,
, 
So the
component is = -2 cm/s
component is = 0
Part C
Given : The
and
components of the vector,
left of
-axis.
So the
component is = -13 x sin (36°) = -7.6412 
component is = -13 x cos (36°) = -10.517 
Answer: Be honest, have confidence, talk face to face, listen to your partner's words, etc.
Hope this helps!
Answer:
I only know that acid rain is one of them!! It can erode rocks and weather down
Explanation: