Sarathwent to anearby rice field and saw there were some other undesirable plants growing along with the rice plants. How do they affect the growth of the rice crop?

According to the theory of punctuated equilibrium, at what rate does speciation occur? species change depending on the rate of natural selection. after periods of stasis, new species evolve relatively rapidly. species change slowly and eventually form new species. some species change quickly and others change slowly to balance the overall rate.

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi