Urbanization has changed literally everything over the years from the environment being destroyed little by little but also it effects water pollution and by factories being made puts a bunch of terrible greenhouse gasses that are not healthy to breath in.
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Crater lake was produced when a stratovolcano collapsed, creating the crater.
Answer:
d. an onblique muscle layer
Explanation:
The alimentary canal has four main layers:
Mucosa (innermost layer which surrounds the lumen), submucosa (connective tissue with blood vessels, lymphatics, and nerves), muscular layer, serosa ( outermost layer of connective tissue).
Muscular layer is subdivided into:
• the inner- arranged in circular rings, prevents food from travelling backward
• outer layer- arranged longitudinally, shortens the tract.
The stomach has an extra layer called inner oblique muscular layer (churning function).
Primary function of Calvin Cycle
Calvin cycle also known as dark reaction. It occurs in stroma of chloroplast. Its main function is to fix CO₂ into glucose molecule with the help of ATP and NADH₂.
