The average distance from the sun to Earth
Explanation:
- Astronomical unit is defined as the the average distance from the center of the earth to the center of the sun.
- It is represented by AU.
- The value is equal to a unit of measurement of 149.6 million kilometers.
- An Astronomical Unit is approximately equal to 93 million miles (150 million km). It's approximately 8 light-minutes.
- Astronomical units are usually used to measure distances in solar system.
Answer:
The Earth has three main climate zones: tropical, temperate, and polar. The climate region near the equator with warm air masses is known as tropical. In the tropical zone, the average temperature in the coldest month is 18 °C.
Answer:
Gastrovascular Cavity
Explanation:
Hydra is commonly found in freshwater ponds and ditches as solitary organisms, in underside of aquatic leaves and lily pads in cool,clean freshwater pools and streams. It has a *Cylindrical body shape*.
Hydra possesses an internal body cavity, the *Gastrovascular cavity *,lined by gastrodermis and has a single opening,the mouth,which serves as an anus.
The Gastrovascular cavity of Hydra is a site for *digestion and nutrient distribution*,and also serves as anus.
<span>Density = mass/volume = 200g/2cm^3 = 100 g/cm^3
Density of water = 1g/cm^3
Specific Gravity is the ratio of the Density of the object to the Density of water so the Specific Gravity is 100
Piece of metal has a </span>Specific Gravity if 100
