Answer: chloroplast
Explanation: animal cells do not need to produce chlorophyll but plants cells do because the chlorophyll absorbs sunlight for photosynthesis and it is what makes the plant green.
Answer:
Answer Below
Explanation:
It usually occurs every 3 to 5 years but can occur as low as every 2 years or as long as every 7 years.
Answer: A compound is a substance in which two or more elements are combined together chemically.
Explanation: Elements present in a compound are always in a fixed proportion and can be separated only by a chemical method. For example, water is a compound composed of hydrogen and oxygen atoms in the ratio of 2:1. The chemical formula of water is H2O.
Answer:
It increases haemoglobin's affinity.
Explanation:
When CO binds to one heme molecule, the haemoglobin molecule becomes in a relaxed state and oxygen can bind so very easily.
The problem is not in the uptake of oxygen, it's with its delivery. The affinity for oxygen increases so much such that it becomes impossible to release and deliver the oxygen to tissues.
Answer:
c. is a biotic factor within an ecosystem
