Several students want to conduct a descriptive investigation on igneous rocks.
Which process is most likely to be part of their investigation?
>observing igneous rock samples collected from different sites
>conducting an experiment to study the composition of igneous rocks
>comparing observations of igneous rocks to observations of metamorphic rocks
>testing a hypothesis about igneous rocks using an independent variable

Analyze how the water cycle affects a food web. now list 3 examples for each below using complete sentences, on how too much water would affect the same web? how about to little water?

4. multiple crosses were made between true-breeding lines of black and yellow labrador retrievers. all the f1 progeny were black. when these progeny were intercrossed, they produced an f2 consisting of 91 black, 39 yellow and 30 chocolate. a. propose an explanation for the inheritance of coat color in labradors. b. propose a biochemical pathway for coat color determination and indicate how the relevant genes control coat coloration.

Which of the following molecules will diffuse most quickly across a lipid bilayer membrane? a. h2o b. o2 c. h2po4 d. glucose e. na+