Explanation: One of the highest probabilities is because of the bird in the front (the one in the point of the v) takes the command in leading to others in the flock to there location which explains for that as in there is no new members of there flock doing so.
Another reason could be is air resistances and helps the flock fly.
Answer:
(a) cell
Explanation:
"What do scientist call the basic unit of life?
The basic unit of life is the cell. In 1838, scientists Theodor Schwann and Matthias Schleiden came up with the original version of the cell theory, which concluded that the basic unit of living things is the cell."
It would be rainforests because it obviously gets a lot of rain and the rain makes the humidity high.
I think it is the second or first i got the 2 words mixed up
It might be Microscopes, but Im not for sure. Microscopes are used to observe things that can't be seen with the naked eye and usually make it easier to observe a natural phenomena.