Why is the alu transposon not considered a proper gene?

Which of the following is the most likely result of converting forestland to urban development? a.the amount of land available for lumber production decreases. b.fewer trees are needed because cities are made mainly of concrete. c.people discover more efficient ways to grow trees. d. the price of lumber goes down.

What do animals wth echolocation have in common other than echolocation

What is a group of organisms that are closely related and share similar characteristics