In order to keep all other things the same and isolate the effects of one particular variable in the biology experiment, Kate will want to do which of the following? Check all that apply.

Offer the same type of food to the rats in each trial.
Avoid drawing conclusions after one trial.
Make sure all tested rats are the same age.

Make sure all tested rats are the same age.

Offer the same type of food to the rats in each trial.

Explanation:

In order to be able to isolate the effects of one particular variable during a research, all the subjects in each trial must be subjected to the same conditions except the variable whose effects is being isolated.

Hence, Kate must offer the same type of food to the rats in each trial as well as make sure that all tested rats are the same age.

sand 60

clay 10

silt 30

sandy loam should be dominated by the sand. as the amount of sand increased, the amount of slit needed to anchor the plants' roots to the sand will also be increased. even though the amount is very little, 10% part of clay is still necessary for proper oxidation.

that scientist would be robert hooke