Which figures can have two sides of the same length, but are not parallelograms?

quadrilateral
rectangle
square
isosceles trapezoid

Environmental impacts on evolution : mastery test

Which of the following is the best definition for the process of photosynthesis? a.) plants digest sugars to make energy. b.) plants use oxygen and glucose to make carbon dioxide. c.) plants use sunlight and carbon dioxide to make sugars. d.) plants use sunlight to make chlorophyll and chloroplasts.

In which of the following relationships is one organism always benefited while the other organism is always harmed