Charles Darwin made the observations which led to the theory of evolution.
Answer: The organic molecules required for building cellular material and tissues must come from food. Carbohydrates or sugars are the primary source of organic carbons in the animal body. During digestion, digestible carbohydrates are ultimately broken down into glucose and used to provide energy through metabolic pathways.
Hope this helps...... Stay safe and have a Merry Christmas!!!!!!!! :D
1. Topographic map: I want to take a nature hike through the woods. I wonder if it is hillly?
2. Geologic Map: I want to study the physical features of my area, but also know what kinds of rocks it has.
Those should be the answers.
Hope this helped :) Have a great day
Because warm air rises up so it's warmer on the top floor.