The answer is genes and not jeans.
It’s D cause all of them are natural resources :)
Answer:
Initial age of ghost shrimp and water temperature
Explanation:
In an experiment, there are several variables (alterable factors) that determine the outcome of the experiment. A CONTROLLED variable or CONSTANT is a variable that is kept constant or unchanged throughout the experiment. The constant is not changed because it can affect the other variables (outcome) of the experiment.
For this experiment conducted by Mary Beth on the effect of size of the tank on the size of the shrimp after 6months, the constants are INITIAL AGE OF GHOST SHRIMP and WATER TEMPERATURE. This is so because the ghost shrimps of the same initial age must be used to start the experiment, so as to be able to measure the actual effect on the growth. Also, the water in the respective tanks must be the same Temperature so that one experimental group will not be favored over another.
What does the question say
<span>The kidneys can have a direct influence on the urinary system, by pushing hydrogen ions and bicarbonate into and out of urine.Without the kidneys performing its duties within the body, waste materials can poison other internal organs causing infection and other complications to occur within the body.</span>