Which characteristic is usedto group the three kinds of eubacteria

Look at the following answer choices and determine which belongs in the both category. testable, can be disproven explains natural phenomena, has evidence to support it prediction, tentative, one or more scientists working together well established, many different scientists working independently, highly reliable

What are the seven economic and social goals?

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from