Answer:phytoplanktons are photosynthestic organism. They have the ability to produce their own food.
Explanation: Because of there small size they could absorb nutrients in the water even at lower concentration and convert it to energy need for there growth.
Its is said that phytoplanktons are one of the largest producer of oxygen gas.
Answer:
Due to presence of these structures in ancient as well as modern organisms.
Explanation:
Homologous and vestigial structures are the evidences that show evolutionary relationships between organisms because these structure were also present in the ancient ancestor of that organism. These homologous and vestigial structures shows the relationship between the ancient and the modern organisms. Some structure has a purpose and function in the body of ancient organisms but with the passage of time those structure are useless and have no function in the body but these structure shows connection between modern and ancient organisms.
Bacteria and fungi carry out decompostion of plants and animals
Answer:
Y most likely represents springs.
The answer is organ systems I believe
