Do fish feel pain? and if they do what pain

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

The combining form leuk/o means red true or false

In a population that is in hardy-weinberg equilibrium, there are two possible alleles for a certain gene, a and a. if the frequency of allele a is 0.4, what fraction of the population is heterozygous? a. 0.40 b. 0.60 c. 0.16 d. 0.48