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Excretory system consists of nephridia as excretory organ which is analogous to kidney.
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Option 5--> Mutations to gametes can be passed on to an organism's offspring.
Option 6--> Mutations to somatic cells are only present in the type of cell in which the mutation occurred.
I believe these two are the correct answers.
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Answer:
The 38 elements in groups 3 through 12 of the periodic table are called "transition metals"
Explanation: don't mind my awful circle lol
Answer:
D. one variable.
Explanation:
An experiment is considered controlled or fair if variables that may affect the outcome are kept the same or controlled and only the independent variable is changed.