The scientific method begins with a scientific question. This question should lead to one or more testable hypotheses. Which of the following is a scientific
question that could lead to a testable hypothesis?

A. Are the birds that use the birdbath prettier in the summer or in the
winter?
B. Should people be required to maintain birdbaths?
C. Why do people want to maintain birdbaths?
D. How do temperature and humidity affect the rate of evaporation of
water?

The image shows a sandstone formation with visible bands of different colors. what do the bands indicate about how this sedimentary rock was formed? choose two answers. a). the rock was made from more than one material. b). water was absent during the compaction and cementation process. c). sediments and other matter were deposited in layers before lithification. d). the rock was stretched horizontally by the pressure from surrounding rocks. e). layers of hot liquid in the rocks cooled and solidified at different tempatures

4emphysema is a health condition in which the lungs can no longer expel carbon dioxide normally. as a result, a person who has emphysema may have high blood acidity levels. the body process that would attempt to return the blood ph to normal so that cells could function properly is called a. active transport b. acidosis c. homeostasis d. adaptation

The function of the larger, more typical pinecone is: it's not multiple choice. to produce pollen to produce sperm to produce eggs to fertilize seeds