They involve cellular division and they result in production of offspring. these two processes differ by the number of cells needed for the reproduction, the type of cell division involved and the genetic structure of the daughter cells. in asexual reproduction there is no mixing of genetic material, the mother cell just divides into two by mitosis and creates its identical clone. on the other side, in sexual reproduction, two haploid cells formed in the meiotic division fuse, combining their genetic material and creating a genetically unique individual.

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

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convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.