The body attacks particular foreign invaders and <span>immunity is adaptive.</span>
They are considered to have originated from cyanobacteria through endosymbiosis—when a eukaryotic cell engulfed a photosynthesizing cyanobacterium that became a permanent resident in the cell
Fossils records the past by the very beginning of all living organism if there was wayer at one time by a fish fossil or if it was a dry land with a plant fossil
<span>An individual with the genotype ddeeffgg under goes self fertilization. Therewill be 81 different genotypes in the offspring of this cross</span>
