a fireplace arch is to be constructed in the form of a semiellipse. the opening is to have a height of 2 feet at the center and a width of 8 feet along the base. the contractor cuts a string of a certain length and nails each end of the string at the foci of the base in order to sketch the outline of the semiellipse.

The different forms of a gene for a given trait are called .

You have a poultry farm and a poultry-processing unit. which product can you make using the waste products from your processing unit?

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.