Ultraviolet radiation is the primary cause of sunburns
<span>The appropriate answer is A. the hemisphere is is tilted toward the sun and the sun reaches its highest point in the sky. This usually occurs on June 20 or 21. At this time the northern hemisphere experiences its longest day. Summer in the nothern hemisphere means that the earth is tilted towards the sun and receives sun rays that are more direct. </span>
Answer:
leave the nucleus, goe to the cytoplasm,bind to a ribosome to be read
1) Eubacteria.
https://upload.wikimedia.org/wikipedia/commons/thumb/7/78/Collapsed_tree_labels_simplified.png/400px...
The homo sapiens appeared after two million years ago.Some of them spread from Africa into Asia and Europe.
