Which of the following phenomena might have influenced the evolution of organisms? 1. Continental drift 2. Glacial cycles. Select the correct answer using the code given below.

1. Continental drift — Movement of continents changed isolation and connectivity of landmasses, altering habitats and causing speciation. Verdict: Correct.

2. Glacial cycles — Repeated ice ages and interglacial periods changed climate, sea levels, and migration patterns, influencing natural selection and evolution. Verdict: Correct.

Hence, both 1 and 2 might have influenced the evolution of organisms.