Why must nations sometimes work together to solve environmental problems

What would be an example of hypothesis for goldfish respiration lab

The frequency of alleles in a population that is in hardy weinberg equilibrium? a . changes in each successive generation b. is less important than the frequency genotypes c. shows evidence of the process of natural selection d. remains the same over several generations

Babies with very low or very high birth weight are less likely to survive. observe a graph of the data.