<span>The answer is ‘They
are evidence that all came from a common ancestor and that life changed over
time for all these organisms’. The individuals
of the ancestor population probably spread
out and became separated b geographical features
or behavioral modification. Over time, this caused
allopatric or/and sympatric speciation. However, these species still bear
homologous structures that show this common
ancestry. </span>
Answer:
Cost : The expenditure incurred by a producer on the factor as well as non-factor inputs for a given amount of output of a commodity.
Answer:
Explanation:
Paleontologists are scientists that study the history/existence of past lives by collecting and examining fossils. They use these fossils to determine the history and age an organism has existed. Fossils are remains of dead organisms (plants and animals) which serve as evidence of past lives that have existed on earth in the past. They could include bone remains or footprint of this animals.
Fossils (from bones) are however mostly incomplete because they decompose before they are "stored naturally" by sediments which covers them. When scientists discover this incomplete fossils, they are compared (if there has been similar fossils discovered before then) and are stored and transferred to the lab for examination. This examination includes anatomical comparison (to determine relatedness with other fossils/organisms), carbon dating (to determine age) and data comparison (which includes location and type of soil and habitat).
The digestive system uses mechanical and chemical methods to break food down into nutrient molecules that can be absorbed into the blood. Once in the blood, the food molecules, including fat molecules, are routed to every cell in the animal's body.
