Plants regulate their water levels in two main ways: Stoma and Vacuoles.
Stoma are bean shaped cells on the leaf that allow water and gas to exit. They open and close to regulate water.
Vacuoles are organelles that store water and fluids, which help regulate them.
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Ha, It learned where NOT to land. That's for sure. But the answer is Operant Conditioning.
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Answer:
as the ratio comes to be 3:1
there for answer will be 3 red 1 white
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Answer:
Inside the air sacs, oxygen moves across paper-thin walls to tiny blood vessels called capillaries and into your blood. A protein called haemoglobin in the red blood cells then carries the oxygen around your body.
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1.abiotic- air and biotic-birds
2.producing delicious and good fruits for animals protect and help them to spread. delicious food attract animals like birds and other animals who are feed on them. when they eat the fruits and the seeds pass by unharmed. these way the seed dispersal occur of a plants.