Estuaries are the most productive of all marine ecosystems. They are located where the river meets the sea. The San Francisco Bay is a popular estuary.
Answer:
Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.5–8.3 at 25 °C (77 °F). Neutral litmus paper is purple. Litmus can also be prepared as an aqueous solution that functions similarly.
Explanation:
Option D is the correct answer.
To what extent has the presence of a true coelom in animals changed over the course of evolution?
A coelom is a body cavity that is formed from the mesoderm tissue.
Option D - The presence or absence of a true coelom appears to have changed multiple times during the course of evolution.
The health consequences of eating it is highly unknown. Genetically modified foods have no been PROVEN safe. I tried to research but I really didn't find all that much. Sorry if this is not what you were looking for...