Which form of life on land appears in the fossil record before all the others?
a) insects
b) fish
c) reptiles
d) plants

Plants

Explanation: The plants were the fossils that was was formed before all the other organism like reptiles, insects and fishes.

Plants were the dominant life form before the insects, fishes and reptiles on earth. Group of algae( algae like plant) evolved in the earlier stages when life started on earth.

Therefore, the fossil record of plants appears first on the fossil record.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: