Question 13 The graph below shows the acceleration of a motorcycle.
Speed vs. Time
12.
10
8
Speed (m/s)
2
0
0
1
2
4
5
B
3
Time (s)
What is the average acceleration of the motorcycle during the 4 second to 5 second time interval?
A 0 m/s
1 m/s2
С
2 mis?
D
4 m/s2

dude i stopped reading after the first 7 words but hey you seem real smart thats awesome have a great day

1. dermis

2. chemical

3. urine

4. viruses

5. antibodies

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.