This process is called osmosis
Answer:
they absorb heat from the sun
explanation: plants in the tundra tend to have dark-colored leaves and stems that help them absorb solar heat faster and keep warm for longer periods.
h i )
To only allow through certain items, and block the rest.
Chordates are animals that possess certain characteristics including a notochord. Humans fall into this category along with many vertebrates such as whales, falcons etc; therefore, all of the answers apply.
Food, research, therapy, entertainment affection.