Match each gymnosperm to its correct description. gnetophytes
make up the largest group of gymnosperms
cycads
lose their leaves in autumn
conifers
grow in deserts and rain forests
ginkgoes
look like a palm tree

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

According to this food web which of the following would be considered primary consumers

Select the correct answer. what does the hardy-weinberg principle relate to? a. chances of survival of an organism b. frequency of alleles in a population c. natural selection in a species d. causes of evolution among organisms