In which organelles does the chemical process of photosynthesis occur?
a) mitochondria
b) nucleus
c) chloroplasts
d) endoplasmic reticulum

What type of weather does tropical continental air bring in summer? hot and cloudy cool and sunny hot and sunny cool and cloudy

Freckles are a dominant trait in humans. both of the girls have the genotype ff for freckles. if either one marries a man with no freckles, what are the chances that their children will have freckles?

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?