What is a main difference between primary succession and secondary succession? A. Primary succession happens slowly, and secondary succession happens rapidly.
B. Small plants grow first during primary succession, while large trees grow first during
secondary succession.
C. Primary succession occurs after a natural disaster, and secondary succession occurs
before a natural disaster.
D. Primary succession is the colonization of new sites, and secondary succession is
colonization of previously inhabited sites.

option a and d is the correct answer

i hope this u

plz mark as the brainliest answer

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

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).

the correct answer is b