Well Trilobites first appeared about 521 MILLION years ago, which is around the Early Cambrian Period. Trilobites were early anthropods that lived in the Earth's sea. They had hard-shelled bodies, and their bodies were composed of multiple body segments and jointed legs. Trilobites are made up of 3 main body parts, the Cephalon (the head), a segmented Thorax, and a Pygidium (the tail). Hope I helped!
The answer will be to: produce protein
By definition, if
Z
, the atomic number
=
7
, then there are 7 protons, 7 electrons, and 8 neutrons!
A biologist is a scientist that studies in the field of life. Hence, as a scientist he follows the scientific protocol. Also known as the scientific method which invovles observation, prediction, testing, interpretation and conclusion. Hence they use this to unearth the unknowns as what the variables displayed.
In the female pig reproductive cycle, more number of eggs are released during one ovulation cycle. That is why, the number of offsprings born is more. The father of the litter is same single animal only. Because the process of fertilization of sperms with the eggs released happen in a time duration of few hours only.
In case of humans as well, the father is same. This is because in human reproductive cycle, only one egg is released majorly, accept the case of fraternal twins where two eggs are released and both are fertilized by two different sperms, but again from the same father.