What is a gland? Help pls

Match the types of competition to their descriptions.

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.

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?