Answer:
Parts of the U.S. state of Alaska and the countries of Canada, Greenland, Iceland, Norway and Russia are all in the Arctic tundra biome. Regardless of how cold and bleak the weather may be in the northern contiguous states in the middle of winter, technically, the tundra does not extend below northernmost Canada
Explanation:
Answer:
El proceso de la fotosíntesis se divide en dos etapas, la primera llamada "Lumínica" o fotodependiente y la segunda "Oscura" o fotoindependiente.
Explanation:
Answer:
Where are the answer choices?
Explanation:
In active transport, materials move from an area of high concentration to an area of lower concentration (goes down the concentration gradient) and it requires or uses energy in the form of ATP (adenosine triphosphate)