Please help me with this

The first and the last one

Explanation:

For the second square, on the bottom right it says it's DD, but that can't be it because the outer things I forgot what they're called, the things outside the square are D and d. If it were to be DD the letters on the outside of the square would have to be DD, not Dd.

For the thirds square, it's the same problem but for the upper right hand square.

1.the evidene of the reaction

2.yes

3.yes

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.