Which row shows the elements and basic units that are used in the construction of large food molecules?
food molecules
elements
basic units
A
fats
B
fats
carbon, hydrogen, oxygen, nitrogen
carbon, hydrogen, oxygen, nitrogen
carbon, hydrogen, oxygen
carbon, hydrogen, oxygen
glucose
glycerol
glucose
glycerol
с
starch
D
starch

Which table best shows the impacts resulting from human activity? impact of human activities human activity impact forest area cleared to construct an airport increase in oxygen level vegetation cleared to construct an oil mine increase in pollution impact of human activities human activity impact forest area cleared to construct an airport increase in sound pollution vegetation cleared to construct a power plant contamination of water impact of human activities human activity impact beehives cleared from urban areas increase in vegetation dams constructed on a river increase in fish population impact of human activities human activity impact beehives cleared from urban areas increase in bird population dams constructed on a river better quality of water

Which of these serves as a reference for comparison during a scientific investigation? a)outcome variable (dependent variable) b) test variable (independent variable) c)control group d)hypothesis

What are tissues? a groups of tissues that work together b basic units of structure and function c groups of cells that perform the same function d multiple organs that perform a major function