1. Use the following setup to answer the questions below: Problem: Do nutrients have an effect on the rate of plant growth?
All plants used were the same height
Two groups:
Group A - given 30 mL of distilled water for 7 days
• Group B - given 30 mL of water containing .1 gram of fertilizer for 7 days
a. State a possible hypothesis:
b. What are two factors that must be kept the same (constant) between both groups?
c. What is the independent variable?
d. What is the dependent variable?
le. Which is the experimental group?

How does the study of genetic disorders such as pku biologists understand normal alleles?

Astudent reads the following text in a science book: scientific evidence tells us that the cause of earths four seasons is the tilt of earth as it revolves around the sound the student is instructed to illustrate this information in a science book. how will the student illustrate winter in the northern hemisphere? a. earths northern hemisphere will tilt away from the sun. b. earths northern hemisphere will tilt toward the sun. c. earths orbit will be farther away than from the sun d. earths southern hemisphere will tilt away from the sun.

What controls activities within a eukaryotic cell?