A farmer wants to reduce the need for pesticides at his farm. What should he do? A. Practice conservation tillage. B. Use beneficial insects. C. Plant grass. D. Plant trees. E. Use buffer strips.

As a rat is taking a drink of green, licorice-flavored water, it receives a painful tail-pinch. The next day it is given a choice between green water and licorice-flavored water. It is likely to drink:

Which type of sponge cells traps plankton and other organisms for nutrition

Submarine canyons are usually found in which region? A. ocean basin floor B. ocean ridge C. continental margin D. ocean trench

Mercury is a pollutant classified as___? A. a radioactive waste B. a heavy metal C. an organic material D. a pathogen

What is a unicellular eukaryote

How does random fertilization add to genetic variation? a) reshuffling of randomly picked up chromosomes b) random fusion of genetically unique gametes c) exchange of genetic material between homologous chromosomes

When the energy of a light wave is transferred to a particle and causes it to vibrate and generate heat, the energy of the light wave is what?

Which statements about a child with brown eyes must be true? Choose more than one answer

I observe that squirrels that live in the southeastern United States are much thinner than squirrels that live in the northeastern part of the country.

66) homologous chromosomes move toward opposite poles of a dividing cell during; a) mitosis.; b) meiosis i.; c) meiosis ii.; d) fertilization.; e) binary fission.