Answer:
-Ecosystems are the foundation of the 'Biosphere' and maintain the natural balance of the earth.
-An ecosystem is an ecological community comprised of biological, physical, and chemical components, considered as a unit.
Explanation:
Active transport requires the use of energy to move particles across a cell membrane, and Passive transport does not use any energy to move particles across the cell membrane. Hope this helped!
-TTL
Answer:
Double Helix
Explanation:
It is called the double helix for the signature shape that a DNA strand takes.
Answer:
Massena, New York
Explanation:
Polaris is most popularly known as the North star. It is also famous by the name of "Pole Star". It is the closet to the north celestial pole. At present it is the northern pole star currently.
It is found in the constellation of Ursa Minor. It is the one of the brightest star seen in the night sky. It is considered the star of the second magnitude which is situated close to the heaven's north pole.
The altitude of the Pole star or the Polaris when an observer is at the Tropic of Cancer is measured at 23.5 degree. While if the observer sees the Pole star at its zenith, the observer is located at the North Pole. i.e. 90 degree.
And the spot from where the observer views the Polaris at 45 degree altitude is Massena, New York.
Answer: Oldest to Youngest: B,E,C,D,A
Explanation: Hope that helped! :)