PART A Multiple choice 1. Which level(s) of ecological complexity involve(s) biotic factors but not abiotic factors?
1. Community
IL Ecosystem
III. Population
A. I only
B. II only
C. I and II only
D. I and III only

Secondary pollutants are more harmful than primary pollutants. select the best answer from the choices provided ot of

Which statement about dna replication is true? a. eukaryotes only have one circular chromosome that unwinds at multiple locations. b. eukaryotes can only replicate one segment of a chromosome at a time. c. prokaryotes can only replicate their single circular chromosome in the nucleus. d. prokaryotes only have one origin of replication to initiate replication.

In a vegetable garden 45 bean plants have been eaten by deer 5 are untouched what is the frequency of bean plants in the garden that have been eaten?