Plz help with these two questions.
will give the brainliest!!

Focal length of the lens increases hence the size of the lens increases.

3)B

4) B

Explanation:

3)Focal length of the lens increases hence the size of the lens increases.

Pupil of the eye decreases in size so as to decrease the amount of sunlight entering the eye when the person looks at the sky. As the size of the pupil was increased for increase the intake of the light while reading a book in the shade

4) Im not really sure, but i am pretty sure it's B. Don't take my word ;D

Hope this helps,

Best of Luck

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.