During a descriptive investigation, the main thing you are doing is

O A) explaining results

OB) making observations

OC) designing a procedure

OD) revising your hypothesis

The best indicator of the efficiency of exercise is a. muscle soreness. b. exhaustion level. c. sweat rate. d. heart rate.

Microevolution, or evolution at its smallest scale, occurs when A) an individual's traits change in response to environmental factors. B) a community of organisms changes due to the extinction of several dominant species.

Where does the process of photosynthesis and cellular respiration occur in scenedesmus?

Which biomolecule contains nitrogenous bases

How do you know if a trait on a pedigree is recessive?

Which area of the brain contains both the feeding center and the satiety center?

DNA sequencing can detect what?

Explain why entering an interglacial period resulted in an increase in biodiversity on Earth.

The ability of your heart and lungs to work efficiently during physical activity is called

For what is solar thermal energy most often used? a. heating homes b. generating electricity c. providing light