All living things are made of organic compounds which contain the element:

question 7 options:

carbon

hydrogen

oxygen

phosphorus

Control of the body is accomplished by which of the following body systems? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems

Some tools have graduations to show multiple measurements. for example, a ruler may have graduations for both millimeters and centimeters. when measuring the length of an earthworm, which graduations would allow for the most accurate measurement? millimeters centimeters decimeters meters

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above