Question

what kinds of waste do animals produce? select all that apply. animal cells make some unneeded chemicals. these chemicals are waste. animal cells store nutrients to use later. these nutrients are waste. there are some parts of an animals food that it cannot use. these leftover parts are waste.

Explanation:

• First option: Animal cells produce waste chemicals as a by - product of metabolic processes. For example, in cellular respiration, carbon dioxide is a waste product.
• Second option: Nutrients stored by animal cells (like glycogen in liver cells) are not waste. They are reserves to be used when the body needs energy.
• Third option: When animals eat, not all parts of the food are digestible. For example, in humans, fiber in plant - based foods is indigestible and is excreted as waste.

Answer:

• Animal cells make some unneeded chemicals. These chemicals are waste.
• There are some parts of an animal's food that it cannot use. These leftover parts are waste.