lab report interdependence of organisms. plz someone tell me the project i need everything not just the data

Introduction Purpose: Explore the interdependence of organisms by  

performing an experiment with lima bean plants and earthworms. Question: How can the presence of one species benefit another in  

the same ecosystem?  

Hypothesis: If plants grow in soil containing worms, then the  

plant growth will be greater, because worms help decompose organic matter and distribute it through the soil in a form that plants can use.

Explanation:

answer; i believe the answer is hydraulic action;

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.