What kinds of scientific investigation involve observation

If an element has two electrons, how many dots will be in the elements dot diagram?

Jimmy does a cannonball into the swimming pool. After surfacing and floating for a few seconds, he observes something interesting. He notices that if he takes deep breaths his body seems to float more.

How did the pink dolphin fit in its environment (freshwater)

Which compound is produced during regeneration?

What do aerobic reputation and anaerobic respiration have in common

as the flames heat the gasses in the hot air ballon, the volume of the gasses increases. At constant pressure, the volume of all gasses increase with temperature. Is this statement a scientific theory or law? Explain

What is a biological entity?

Toxic waste can enter foods through the contamination of groundwater. True or False?

An organism that is heterozygous for a particular character will generally show the recessive trait. a. true b. false

Some speciea undergo long peiods of stability interrupted by geologically brief periods of signifficant change. During these brief periods, new species may evolve. This pattern of evolution is part of the concept of