What organs control the amount of water in the body by filtering your blood and excreting waste products through urine? kidneys lungs heart brain

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

Tara sees a commercial for a brand of pills that promise to boost energy and people perform better in work and school. as people in the commercial talk about how much better they feel when taking the pill, tara notices a message on the bottom of the screen that reads, "this pill is not approved by doctors and has not been tested in controlled experiments." what is the best conclusion that tara should make about the commercial? it is making scientific claims based on subjective observations. it is making scientific claims based on opinions instead of pseudoscientific facts. it is making pseudoscientific claims based on objective observations. it is making pseudoscientific claims based on opinions instead of scientific facts.

Are gametes exactly the same? explain why or why not?