What are the two main forces that cause soil erosion? plate tectonics and water
water and wind
plate tectonics and earthquakes
earthquakes and wind

Asmall number of finches are removed randomly from the wild and placed in a protected bird area. they are given as much food as they need and have plenty of space. why would natural selection not occur in this population? a. there is no reason for genetic mutation to occur. b. the birds compete for limited resources, c. the population has not reached carrying capacity. d. there is no genetic variation in the finches.

Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?