Describe and explain how the structure of the human gas exchange surface is adapted for maximum efficiency. (relate with protein in blood
also)

List two limitations of natural selection

Type the correct answer in the box. use numerals instead of words. fiona has a lovely flower bed in her yard. she wants to add a fence along one side of the flower bed. the fence material is sold in meters. fiona knows that her flower bed is 200 centimeters in length. how much fencing material does fiona need in meters? fiona needs meters of fencing material for her flower bed.

What is the compliment dna strand to the following sequence: ttgactaggcta