Which organisms can be found at the first, or lowest, trophic level? A. herbivores
B. carnivores
C. heterotrophs
D. autotrophs..

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

Ricardo notices that when he plays soccer in the rain, his ball does not seem to go as far after a kick. what is the best scientific question that ricardo could ask about this observation? is soccer better played in the rain or sun? how does rain affect the distance a soccer ball can travel? how does rain affect the speed of a soccer ball? is soccer affected by the rain?

What is the most important inorganic material for livings things? ! due tomorrow!