What are the 3 basic muscle types

1) Smooth muscle

2) Cardiac muscle

3) Skeletal muscle

Explanation:

Smooth muscles are also known as an involuntary muscle. An example if this is your heart, your heart beats by itself.

Cardiac muscles are found in your heart, where it performs coordinated contractions that allow your heart to pump blood through your circulatory system.

Skeletal muscles are attached to your bones by tendons. They are the opposite of smooth muscles, they are voluntary muscles. This means that they help you do everyday tasks such as walking.

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c