Which is the best hypothesis for the scientific question "how does light intensity affect the rate of photosynthesis? "
light intensity, co2 concentration, and temperature are factors that determine the rate of photosynthesis.
light intensity has no effect on the rate of photosynthesis
if the distance between the source of light and the plant is increased, the rate of photosynthesis will decrease
light intoncita
animact on the rate of photosynthecie

What was dr. willem johan kolff’s first step in using the scientific process to invent the hemodialysis machine? he built the machine and tried it with various patients, collecting data about its effectiveness. when a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine. he researched and collected data about numerous patients who exhibited symptoms of kidney failure. he drew conclusions from studies of various symptoms of kidney failure, and drew a design for the ideal external blood-processing machine.

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction. this is an example of speciation.

Natural resources are any materials that humans obtain from the earth to meet our wants and needs.