What makes climate change research valid? A. Most climate change studies show variability in opinion.
B. Only a few scientists believe climate change is occurring.
C. Many lines of evidence show climate change occurring.
D. Most climate change studies are by unknown scientists.

C. Many lines of evidence show climate change occurring. makes climate change valid.

Explanation:

There is a strong scientific consensus that the Earth is warming and that this warming is mainly caused by human activities. This consensus is supported by various studies of scientists' opinions 

ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).