internal is in and external is out fertilisation
External. Internal devices would be something like a CD Drive, while an external device is a keyboard or mouse for example.
external is thunder
No, the frog is an example of external fertilization.
scientists classify organisms into groups based on internal and external features.
The difference between an external stimulus and an internal stimulus is that an external stimulus is a stimulus that comes from outside an organism. But an internal stumulus is a stimulus that comes from inside an organism. An example for an external stimulus can be that when you are cold, you put on a jacket. An example for an internal stimulus is that when you feel hungry, you eat food.
5 55 5 5
internal external not internal external not
Internal means inside e.g. organs. External means outside e.g. features, lips, skin etc.
its internal
Is a salmon internal or external?
Well, honey, the external terms of a ratio are the first and last numbers in the ratio, while the internal terms are the second and third numbers. So if you've got a ratio like 2:5, the external terms are 2 and 5, and the internal terms are... you guessed it... 2 and 5. Math can be a real hoot, can't it?