These large vessels carry blood back to the heart.
What are veins?
This is the most commonly abused hallucinogen.
What is marijuana?
The term for an originally created type of organism.
What is a kind?
This is what we call a species of animal that is no longer around.
What is extinct?
This type of leaf has more than one leaflet attached to the petiole.
What is a compound leaf?
This feature of an animal allows it to hide from its prey.
What is camouflage?
These are the lower chambers of the human heart, that pump blood to the rest of the body.
What are ventricles?
This group of nutrients includes sugars and starches.
What are carbohydrates?
What is a mutation?
This classification of animal does not have a backbone.
What is an invertebrate?
These plants grow from a seed, produce flowers, then dies in one growing season.
What are annuals?
This is how bats find their prey.
What is echolocation?
This mineral is necessary for the transport of oxygen in the blood.
What is iron?
Thin, sticky film that forms on teeth.
What is plaque?
This is the term referring to the similarity of design found in many living things.
What is homology?
A group of these animals is called a mob.
What are kangaroos?
What is pollination?
This category of animals eats both plants and animals.
What are omnivores?
This system controls the body's functions and activities.
What is the nervous system?
Alcohol is in this group of drugs.
What are depressants?
This is the variation of the gene pool within a particular kind.
What is speciation?
This is the general name for animals that chew cud.
What are ruminants?
This is the early growth of a seed, until the plant is mature enough to produce its own food.
What is germination?
This is an internal skeleton.
What is an endoskeleton?
This system contains the brain and spinal cord.
What is the central nervous system?
This system breaks food down into usable nutrients.
What is the digestive system?
He is known as the Father of Anatomy.
Who is Andreas Vesalius?
This slow-moving arboreal xenarthran has large claws.
What is a sloth?
Angiosperm seeds are enclosed in this structure, for protection and dispersal.
What is the fruit?
A type of tail that can be used for grabbing.
What is prehensile?
This system produces hormones that control various internal body functions.
What is the endocrine system?
This type of exercise strengthens the heart and lungs and allows a person to burn fat.
What is aerobic exercise?
This scientist disproved spontaneous generation through his experiments with broth and flasks.
Who was Louis Pasteur?
Members of the pea family, these plants help restore nitrogen to the soil.
What are peas?
Which teeth are flat and used for grinding food?
What are molars?