How many types of nucleotides are there in dna

The picture shows a location in india that is very dry and arid. notice the tall mountains in the background; you can find high amounts of vegetation on the other side of the mountains. which statement is most likely true for this area?

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

What is the process by which biological parents pass traits such as hair type or eye color to their children