Which question below is impossible to test through observation? What is the average amount of acorns squirrels living in a park collect in fall?
Which foods did dinosaurs compete for?
Which bird species migrates in winter?
Which type of flower in a field stays in bloom the longest?

Which organelles are involved in energy conversion

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.

The arrows indicate the direction of wind flow. which place experiences monsoons?