Sara and juan conducted an experiment to test which soil would be best for growing plants. they used all three types of soil seen in the jar: sand, silt,
and clay. they also made a mixture of soil using equal parts of sand, silt, and clay. they planted bean seeds in four pots and placed the pots in the sunlight. they watered the pots every day and tracked the seed germination and plant growth.
which of these best reflects a possible hypothesis for the experiment?
a) the bean seeds will grow faster in warmer weather.
b) the bean seed in the pot of silt will grow fastest.
c) the bean seeds will all take three weeks to sprout.
d) the color of the pots will affect the growth of the seeds.

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.

What is the key to the recognition of codominance?