Answer:
c
Explanation:
the RBC first is in the arteries then it reaches the body cells via the capillaries then the deoxygenated rbc reaches the heart through veins which carry those
Answer:
B
Explanation:
Nerve cells can carry signals and connect all parts of the body to the brain
Yes it occurs naturally on everyone :)
Answer is Middle Paleozoic era.
Paleozoic era was in 542 Ma - 245 Ma and it has 6 periods as Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian.
360-280 Ma - forming of vascular plants with woody tissues, seeds and veins.
430 - 410 Ma - forming of jawed fishes and first amphibians.
420 Ma - forming of scorpions
360 Ma - forming of crustaceans.
The erosion or disintegration of rocks, building materials, etc., caused by chemical reactions (chiefly with water and substances dissolved in it) rather than by mechanical processes. HOPE THIS HELPS!! :)
