Bacteria are an important part of the digestive system. Select all statements that are true about the role bacteria play in digestion. A. Bacteria help with nutrient absorption.
B. Bacteria help with vitamin production.
C. Bacteria fill spaces in the digestive system so that bad bacteria cannot live there.
D. We can find both good and bad bacteria in the digestive system.​

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

All eukaryotic cells contain small bodies called

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.