Answer:
Sea urchins have a unique relationship of oxygen and carbon-di-oxide.
Explanation:
Sea Urchins spread oxygen in a unique way. They take in oxygen by staying inside water. Oxygen enters the body through their gills and tubed feet. CO2, which is waste is released through the anus. They get oxygen only through diffusion, i.e. diffusion of oxygen into the organism. Oxygen diffuses in body through the canals and carbon dioxide diffuses back into the canals. Urchins also have the capability to cope up with rising CO2 levels in the sea.
Answer:
All cells all the time.
Explanation:
Photosynthesis is the process of the formation of organic nutrients, glucose in the presence of sunlight by fixing CO2. Cellular respiration is the oxidation of nutrients. The process forms ATP which in turn serve as energy currency for living cells.
Plant cells perform cellular respiration to obtain the energy stored in the chemical bonds of glucose. The energy obtained by cellular respiration is used to perform the vital functions by cells. Therefore, irrespective of photosynthesis, cellular respiration occurs in all the cells of the plants all the time to fulfill the energy requirement for growth and development.
Answer:
Repetitive DNA segments: transposable elements.
I hope it helps.
Undiscovered lands will provide plenty natural resources
