Name the cells that are produced by the testes and ovaries

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water