How can speciation of plants benefit humans?

What is thought to have caused the mass extinction at the end of the cretaceous period?

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.

Use the distance formula to determine weather each pair of segments have the same length