Elevation (it uses different colors to show the elevation of different places such as plains and mountains)
The correct option is b. False
Epithelial tissues are sheet of cells
that covers a body surface. They are avascular as they lack blood
vessels and are supplied by nerve fibers. Epithelial tissues exhibit apical
basal polarity and they fit close together to form continuous sheets.
B<span> Surveying opinions of fellow classmates and friends.
Because that opinions NOT facts</span>
Answer:
The most abundant type of pollution in national parks at that time was air pollution and it had begun to reduce biodiversity as organisms were leaving polluted areas for cleaner ones, or they simply were not able to survive.
Answer:
During the Devonian period which occurs 375 million years ago, gills are present in the fossil of tetrapods.
Explanation:
Gills present in tetrapods which able the marine animals to breathe inside water but with the passage of time the sac which is present around the gills convert into lungs and these tetrapods are able to live on the land. Examples of tetrapods are frog, lion, birds and salamander etc.
