The theory of biological evolution has never been demonstrated by using the scientific method? true or false?

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above

Food contains a sugar called ( ), which is broken down in a process called cellular ( ). this process uses ( ) to break down food molecules and provide energy for cells. fill in the parentheses

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled