What are 2 types scientific observations?

Question

What are 2 types scientific observations?

Answer 1

You can make scientific observations of natural situations, f.e. how much insects visit two different flowers in one hour and than draw conclusion bees prefer sunflowers and flies prefer primroses.

A second method of scientific observation is to make a formal, carefully planned and executed experiment, you create the situation you want to observe:

You take two seeds of same species  and breed one in sand and the other in clay, they get both the same quantum of water, have the same sunny place and all the same conditions. Then you check which one growth better.

A very important fact is, that all scientific observations must be repeatable, so that your friend can rerun them with same/similar results.