How does artic sea ice during winter compare to summer?

Long term exposure to waves can cause sunburns and skin cancer.

The arrows indicate the direction of wind flow. which place experiences monsoons?

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes