Diff: 2 Page Ref: 685-686. 18) If the vagal nerves to the heart were cut, the result would be that ________. A) the heart would stop, since the vagal nerves trigger the heart to contract. B) the heart rate would increase by about 25 beats per minute. C) the AV node would become the pacemaker of the heart.
Living things have seven essential processes in common:  movement, respiration, sensitivity, growth, reproduction, excretion and nutrition. All things fall into one of three categories: living, used to be living or not living; the presence of all seven life processes indicates a living thing.
All the living things, or organisms, and nonliving things that interact in a particular area make up an ecosystem. Organisms live in a speciï¬c place within an ecosystem. An organism obtains food, water, shelter, and other things it needs to live, grow, and reproduce from its surroundings.Some organisms make their own food in a process called photosynthesis. Other living things depend on plants and algae for food.The place where an organism lives and that provides the things the organism needs is called its habitat. An organism interacts with both living and nonliving parts of its habitat. The living parts of an ecosystem are called biotic factors.rganisms live in a speciï¬c place within an ecosystem. An organism obtains food, water, shelter, and other things it needs to live, grow, and reproduce from its surroundings. Some organisms make their own food in a process called photosynthesis. Other living things depend on plants and algae for food.