Heterotrophs conduct cellular respiration and use what 2 things? * 1. Water and Carbon dioxide
2. hydrogen and oxgyen
3. chemical and physical

Please answer

What links the two strands in a dna helix together in the middle? a. phosphate groups b. sugar rings bonded together c. proteins d. bases with hydrogen bonds

The condition in which joints are inflamed is bursitis select the best answer from the choices provided ot f

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.