Answer:
the answer would be B. Digestive system, Muscular system, endocrine system, nervous system
Answer:
Space is a vacuum thus you wouldn't be able to hear any noise.
Answer;
Endosymbiotic theory is important as it explains the origin of the chroloplast and mitochondria. It also explains the formation of the eukaryotic cells.
Explanation;
Endosymbiotic theory explains the origins of eukaryotic cell organelles such as mitochondria in animals and fungi and chloroplasts in plants.
Mitochondria and chloroplasts are believed to have developed from symbiotic bacteria, specifically alpha-proteobacteria and cyanobacteria, respectively.
Overlapping niches lead to competition because they need the same resources such as food sources
