1. what was the independent variable in this lab? *a. water volumeb. water massc. timed. soil type

I can’t give you a specific answer because I’m not sure what your lab is. However, an independent variable is the variable that is changed, the dependent variable is the variable that is affected by the change, and the constant variables are those which remain the same throughout the entire experiment.

Homologous chromosomes with heterozygous alleles d) heterozygous chromosomes with homozygous alleles