Srontium-90 has a half life of 29 years. what percentage of the original parent material remains after 87 years

What condition is kept close to its set point in osmoregulation? a. body temperature b. platelet count c. blood glucose level d. water balance

In this assignment, you will analyze an example of speciation by researching the finches of the galapagos islands. then you will answer questions to construct explanations and draw conclusions based on the information you gather. someone plz !

What type of pollution does household garbage cause