Answer:
(A) Winters would be cooler and summers warmer because of the closer proximity of the Earth to the Sun.
Explanation:
The Northern hemisphere of the earth in July is the summer, the hottest season of all, and in January it´s winter the coolest season of all, so if 13,000 years from now the earth will be closer to the sun in july and more far away in january what this would do is create cooler winters, and warmer summers.
Answer:
If the Earth weren't tilted on its axis, there would be no seasons. And humanity would suffer. When a Mars-size object collided with Earth 4.5 billion years ago, it knocked off a chunk that would become the moon. It also tilted Earth sideways a bit, so that our planet now orbits the sun on a slant.
Explanation:
A. Water being pumped in and out of guard cells.
So planarians' regenerative ability are powerful cells called pluripotent stem cells, which make up one-fifth of their bodies and can grow into every new body part. I hope this helped if you need more info about this let me know