Reactions happen instantly even if some are slower than others they all happen instantly so the answer would be A.
1) d
2) b because the independent variable is the thing you change/control in an experiment
3) c because the dependent variable is the thing being measured in an experiment
4)hmm it might be d, as c and a are both correct as different sized feeders would make it an unfair test and different types of food would as well
5) c
6) a
7) b obviously because if he activated them at different times then the ones activated last would have an advantage
Answer:
The humid continental climate has hot summers, while the subarctic climate has short, cool summers.
Explanation:
I did the lesson already and got it correct lol
Answer:
The overall speed add then divide
Hope this helped :)