All of the following are possible sources of error in a scientific investigation except for: a- not being able to complete all trials of an experiment b- measuring materials such as mass and volume incorrectly c- having a constant in your experiment d- recording experimental data incorrectly

Number and variety of living organisms includes genetic, species, and ecological types

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere

Drag each label to the correct location on the chart. match the function to the type of tissue