How will the movement of water affect a cell if it is transferred from a hypotonic solution to a hypertonic solution?
a. the cell wall will dissolve
b. the cell will be unaffected
c. the cell will shrink in size
d. the size will increase and then reduce

What causes darkening of the skin as melanin production increases

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.