What would you call a species that first enters an environment in the early stages of succession?
a. a pioneer species
b. an alien species
c. an invasive species
d. an endangered species

Suppose you are estimating the size of a blue crab population. what is the population size if the number marked in the first catch is 40, the total number in the second catch is 200, and the number marked in the second catch is 50?

Leila has dimples because she received a gene copy from her father that coded for dimples. this means that dimples are an example of a trait that is

Solutions to environmental problems in europe must