HELP ILL GIVE YOU BRAINLIEST AND POINTS I NEED THIS ANSWERED BY today ITS DUE

What happens to an organism if an organ or organ system does not function properly?

All of the organ systems of the body work together to maintain homeostasis of the organism. If homeostasis fails, death or disease may result.

Why do organisms forget some things and remember others?

The main reason is that in order for us to store information and remember it, our senses have to capture them perfectly.

How are some organisms able to survive as single cells while other types of organisms have multiple body systems each made of many cells?

The one cell can do it all.

Why do some animals have a heightened sense such as sight or smell?

All aspects of an animal's senses, from the structure of its sensory organs to the numbers of receptor cells and the behaviour of its brain, are ultimately derived from its genes. It's the genes that decide how well an animal can smell, see, hear or taste.

Do organisms instinctively know how to respond to the environment, or do they have to learn how to respond?

All animals, including humans, have instinctual behavior, but animals can't survive on their instincts alone. Animals need to be able to respond to their environment to survive. ... This process of modifying behavior based on experience is called learning.

hopefully this helped! :)