Correct Answer is A. They were able to increase their productivity due to the popularity of tractors.
Answer:
experiments can be designed and performed by anyone with a curious mind
Explanation:
baking soda and vinegar explosions are an experiment that doesnt require expensive equipment
always do more then one trial, like shooting a basketball, if you shoot once and miss, can you say that you will never make it? or if you make it, can you say that you will never miss?
variables are what you are testing, you have to eliminate as many as possible so they dont effect your experiment
if you have any questions, leave them in the coments and i will try to answer them, if this helped, pls give brainliest.
Answer:
A test cross may be used to help work out the genotype of a black mouse.
Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files.