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Molluscs were the first organisms to have a(an)  ______ body plan and well-developed organ systems.

Fungi are saprobes. This means they

Which of the following shared characteristics among arthropods introduced an increase in locomotion in the evolutionary timeline?

Prokaryotic cells can be defined by their metabolic abilities. A chemoheterotroph is an organism that uses ______ for energy.

Which of the following examples belong in the bivalves group of molluscs?

Biodiversity hotspots only cover 2.4% of the world’s surface. If we were to lose these areas, we would also lose approximately ______of all plants, and ______ of all animal species.

What is the function of connective tissue in the human body?

Fungi were once classified as plants.

Heart disease is the number-one cause of death in the United States.

Thinking about evolutionary development, which of the four major classes of vertebrates is the least advanced?