the trees
produce oxygen and balance the air cycle in the nature
it can be renewed, you can split Water in half and half would be oxygen, so yes
Yes, a tank of oxygen can be half full. The oxygen would be stuck in said tank meaning no more oxygen can get in unless refueld.
yes if the oxygen is in liquid form.
trees
because the other half of the oxygen is used for the contact stage
trees
trees
Hemispheres. "Hemi" means half, and any sphere so divided produces two hemispheres.
trees
Contrary to popular secular belief, tree's don't actually produce the majority of the worlds oxygen, in fact, approximately 91.6% of the worlds oxygen is produced by phytoplankton blooms in the northern hemisphere of the ocean.
sexual reproduction requires meiosis, a process in which a parent cell divides to in half and only have half on the chromosomes: 23 asexual reproduction is a process in which only one parent produces another organism :)
Giant Fungus
Mars is only about half the diameter of Earth. Both are terrestrial planets and Mars has an atmosphere made primarily of carbon dioxide rather than Earth's nitrogen-oxygen atmosphere.
the answer is MEIOSIS meiosis produces 4 single cells with half member of the chromosomes mitosis produces 2 cells with full member of the chromosomes
Half-moon Half-Earth
The level an organisms gets its energy is ten and a half years so the organism is still for ten and half years.
Meiosis.