The human body contains many different types of glands; glands that secrete digestive enzymes, mucus, and sweat. These secretions are modified, sorted, and packaged for later release from gland cells. Ribosomes Golgi bodies Mitochondria Endoplasmic reticulum

not sure if this is what you'r looking for eubacteria and archaebacteria

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?