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00:00Everybody knows that some things are alive, and some things are not, but sometimes it
00:09can be hard to tell them apart.
00:12Let's learn about the features that determine whether something is alive.
00:17Living things are called organisms.
00:20An organism is any living thing, from elephants to trees.
00:26Even the green scum floating on ponds is an organism.
00:30First, all living things need some kind of energy, nutrients, or food.
00:37This does not mean, however, that all living organisms will eat.
00:42Some organisms, like plants, can make their own food.
00:47Second, all living things can grow.
00:51Living things grow in different ways.
00:54Some organisms grow to a specific size and then stop, while others may keep getting larger
00:59through their entire life, but all living things can grow and become larger.
01:06Third, living things react to changes in their environment.
01:12This could be anything from a person using an umbrella to keep dry in the rain, to a
01:16plant sending its roots deeper into the ground to reach water.
01:21To react to change, organisms need to be able to sense when things change.
01:28Humans and many other animals have senses like sight, hearing, and touch to help us
01:33know when conditions have changed, but even plants have senses that allow them to tell
01:38where the light is and which way is up and down.
01:43Finally, all living things can reproduce.
01:47Whether this means making seeds, having babies, or even just dividing, living things can make
01:54more of themselves.
01:58Now that you've learned how to tell if something is living or nonliving, let's look at some
02:04examples and see if you can tell whether they are living or nonliving.
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02:47don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don't let go, don
03:17you enjoyed learning about the difference between living and nonliving things today.
03:22Goodbye till next time!