(Q).
If organisms rely on a relatively narrow range of acidity, then what relies on a relatively narrow range of acidity? Answer choices: - organisms - carbon - animals - hydrogen - density - trees - Most plants - barnacles
(A).
organisms

(Q).
If when half of Earth is tilted towards the sun , that half of Earth receives more direct sunlight, then what happens to half of Earth when it tilts towards the Sun ? Answer choices: - it receives more sunlight - it melts - movement of tectonic plates - it receives less sunlight - tectonic plates being pushed together - heat is produced - It used to be covered by water - it receives no sunlight
(A).
it receives more sunlight

(Q).
If plants require hydrogen for their survival, then what do plants require for their survival? Answer choices: - Light - Proteins - Energy. - salinity - hydrogen - nutrients - sunlight - food
(A).
hydrogen