Question

photosynthesis
is the process by which green plants and algae convert sunlight to plant tissue
from carbon dioxide and water
requires the presence of __________ or green pigments, in plants which absorb light
provides an important by - product, oxygen, which helps maintain the oxygen cycle
all living things, including plants, respire: organisms require oxygen to break down
__________ in order to create energy
process results in carbon dioxide and water by - products

Explanation:

1. For the first blank: Photosynthesis in plants requires chlorophyll (green pigments) to absorb light. Chlorophyll is the key pigment that captures light energy for the process.
2. For the second blank: Organisms (including plants during respiration) break down glucose (a type of sugar/carbohydrate) to create energy through cellular respiration. The process of respiration uses oxygen to break down glucose, producing energy, carbon dioxide, and water.

Answer:

First blank: chlorophyll
Second blank: glucose (or food/carbohydrates, but glucose is the specific molecule often referred to in this context)