Fact 1: Gene flow occurs when individuals move into or out of a population. Fact 2: Gene flow between populations is unidirectional. Given the two facts above, answer the question "what is individuals moving into or out of a population?" with the following options: - Greenhouse gases - rapid expansion - Burning fuel and air - permineralization - peachleaf willow - competition - unidirectional - food and shelter
unidirectional

Fact 1: Gases released during the use of fossil fuels causes global warming. Fact 2: Oil is a fossil fuel. Given the two facts above, answer the question "gases released from the use of what causes global warming?" with the following options: - CO2 - coal - CO 2 - h2o - hydrogen - cooking - oil - CFCs
oil

Fact 1: Courtship is behavior that is intended to attract a mate. Fact 2: Reproduction A courtship usually preceeds the actual mating. Given the two facts above, answer the question "What precedes reproduction?" with the following options: - courtship - a sperm going into an egg - competition - Winter - parasites - embryo forming - fertilization - Summer
courtship

Fact 1: Bacteria cause food to spoil. Fact 2: Honey never spoils. Given the two facts above, answer the question "What food contains no bacteria" with the following options: - energy - milk - honey - Energy. - oysters - rabies - coffee - sugar
honey