What are the factors that could have effected the climate between 1840 and now in toronto?

List five ways we are indebted to phytoplankton

Match each description of an object’s motion with the position-time graph that represents it. not moving moving with constant speed speeding up slowing down

The offspring of a black cat and a white cat is a gray cat, it has the genotype bw if a black cat mates with a gray cat the chance that the offspring is white will be what percent?