Name two methods scientists use to obtain empirical evidence

1) Measurements during an experiment: for example measuring the weight of some substance or the size or temperature - mostly in natural sciences

2) Questionnaires in case of social studies. For example, if you want to examine the level of attachment in dog owners towards their dogs, you can have the owners fill in questionnaires for you.

Glucose, also called grape sugar, blood sugar or corn sugar, is among the simplest and one of the primary naturally occurring sugars. produced naturally by plants as the primary photosynthesis product, it is heavily used by living beings as a main energy source and is necessary for cellular respiration. chemically, it is a monosaccharide carbohydrate and serves as a building block for complex sugars like starch.