Answer:
The results are not able to be reproduced.
Explanation:
Generally, if an experiment is done and the results/similar results can not be reproduced then it can be considered invalid.
Answer:
Empty calories may be grasshoppers' downfall.
Explanation:
Many insect populations are declining, and a provocative new hypothesis suggests one problem is that rising levels of atmospheric carbon dioxide (CO2) are making plants less nutritious. That could spell trouble not just for insects, but for plant eaters of all sizes.
the 5-to-3 direction of one strand is counter to the 5-to-3 direction of the other strand.