There were 21 tricycle wheels in the driveway. A tricycle has 3 wheels. How many tricycles were in the driveway?

Select all that apply. Q1: Neptune- has a longer revolution period than Uranus has a longer revolution period than Pluto is made of mostly hydrogen and helium has a blueish color because of methane in the atmosphere was predicted by abnormalities in

Which is the most direct effect of the flooding and drought cycles in africa?

What does the directed-pollination hypothesis suggest?

Sickle-cell anemia is an example of codominance. What implications does this have for people with one or two copies of the sickle-cell gene?

What effect could an uncontrolled grass carp population have on the energy pyramids of a lake environment?

White coloring in guinea pigs is recessive. What will the offspring be from a cross between a white guinea pig and a heterozygous black guinea pig?

Which of the following components is NOT part of the modern cell theory? A) All cells arise from preexisting cells. B) Bacteria are examples of eukaryotic cells. C) All living organisms are made up of one or more cells.

A person who has a weakened immune system may not be able to fight against infection because pathogens may enter the body and cause illness. phagocytes many enter the body and cause illness. normal cells crowd out unhealthy cells.

What happens when a magnesium ion is attracted to a chlorine ion? O A. They form a covalent bond. B. They form an ionic compound. O C. They share electrons. O D. They form a gas.

The cytoplasmic membrane is termed "semi-permeable" because some substances, like water and alcohols, can pass freely through while others, like sugars, amino acids, and ions, cannot.