Answer to Question #95404 in Physics for B Ranjith Kumar

Question

Redi placed pieces of meat in several jars. He divided the jars into two groups. He covered the one group of jars with fine cloth (lids are used in this replication of the experiment). He left the second group of jars uncovered. Redi observed the jars for several days. He saw flies on the covered jars, and he saw flies laying eggs on the meat in the uncovered jars.

redi experiment 2: two jars. One has a lid and one does not. Both have meat in them. Flies surround the jars. There are maggots on the uncovered jar's meat.

Maggots appeared only on the meat in the group of jars left uncovered.
Ques: What was the variable in his experiment?
Covering both jars.
Covering one jar and leaving the other uncovered.
Leaving both jars uncovered.
There was no variable in this experiment.

Answer 1

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