Can directly use the energy of sunlight to make their own food, and must rely on other organisms to provide the energy they need to survive. a. autotrophs; heterotrophs b. heterotrophs; autotrophs c. photosynthetic organisms; autotrophs d. autotrophs; photosynthetic organisms e. heterotrophs; photosynthetic organisms

A, autotrophs are plants and microbes that take in small uncomplex substances for energy, such as sunlight and carbon dioxide, and heterotrophs must take in complex substances for energy, such as animals and plants.

dz nuts.   eeneneneeenenne

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.