Which of these is an example of an organism?

After wood is removed from a tree, is it still a living thing?

Which of these objects is NOT an organism?

A human heart is an example of:

Which of these is a biotic factor in an environment?

Which of these resources is abiotic?

This image shows a microscopic creature that is similar to a mite. It is made of more than one cell and can reproduce. This means that the creature is:

Which of these are you most likely to see on the inside of a unicellular organism?

You look inside an organism and you see a single cell wall, a few chloroplasts, and a food vacuole. Based on this description, this organism is probably:

If you look closely at this paramecium, you can see it has a cell membrane, and many organelles. Paramecium also feed on other things like it. This means a paramecium is a: