How does the carbon cycle happens inside a bottle

To show the carbon cycle in a bottle ecosystem. A bottle ecosystem is to recreate an ecosystem inside a bottle or a container to study them or just for decoration. ... The second thing that happens in the ecosystem is that the pondweed absorbs the carbon dioxide converting it into oxygen by the process of photosynthesis.

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.