In England, peppered moths have two color forms, light and dark Dark is a dominant trait. Until about 1850, the majority of moths in England were light colored. With the beginning of the Industrial Revolution in the late 1800's, the
moth population began to change color. The majority of the moths were dark by the 1920's. How can this be
explained genetically?

What was dr. willem johan kolff’s first step in using the scientific process to invent the hemodialysis machine? he built the machine and tried it with various patients, collecting data about its effectiveness. when a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine. he researched and collected data about numerous patients who exhibited symptoms of kidney failure. he drew conclusions from studies of various symptoms of kidney failure, and drew a design for the ideal external blood-processing machine.

How is the national wildlife refuge system similar to the pacific region coastal program? a. both programs are concerned with providing habitats for wildlife b. both programs are primarily concerned with preserving fish species c. both programs have set aside 150 million acres of land d. both programs are under the u.s. fish and wildlife service

What is a dendrite and what does it do?