Answer: A. Multicellular life
Explanation: Multicellular organisms are compund by many cells and different type of cells. In such organisms, cells must work together for the survival of the organism. That cooperative work includes regulation of cell division and cell death, division of tasks and cell fates, for example, cells for the immune response, those for metabolism in the liver or neurons for neurotransmision, and nutrient transport.
Helpful bacteria: Decomposers, Nitrogen fixers, Probiotics
Harmful bacteria: Pathogens, Salmonella, MRSA
Bacteria are microscopic,
single-celled organisms that exist in their millions, in every environment,
both inside and outside other organisms. There are many different types of
bacteria. One way of classifying them is by shape. Some bacteria are helpful
while some are harmful.
Answer: Biodiversity is used to refer to all species that lives in there
Explanation:
