When light energy excites electrons in photosystem ii, where do the electrons to replace them come from?

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.)chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.

Which could be a pathway of food through an ecosystem