Answer:
energy pyramids shows importance
and webs show how everything is connected
Explanation:
Answer:
The correct answer will be option-C
Explanation:
The rhythm of the heartbeat is controlled by the pacemaker of the heart called the sino-atrial node.
The SA node generates action potentials which trigger the contraction and relaxation of the atrium and ventricles. The membrane potential generation initiates by the depolarization of the cell membrane when the L type of Ca⁺² ions opens up and calcium ions enter the cell.
This depolarizes the cell until the potential threshold is reached which lies between the -40 and -30 mV.
Thus, Option-C is the correct answer.
"Scarus frenatus" I think
Answer:
phenomenons are amazing and fantastic things. People use the word to describe how spectacular something is.
Explanation:
Rainbows are phenomenons because the color of the rainbow shines through water. The light is reflected which causes the beautiful colors of the rainbow. People told stories about Rainbows, they were always curious how they were bright and how beautiful it was. You might have heard about a pot of gold in the end of a rainbow. In my opinion Rainbows are phenomenal because of the feeling you receive from it. It makes you feel happy after a dark rainy day. When it rains it looks sad, and lonely. But once the sun shines after a rainy day. It shows all its beauty and wonders, the rainbow shines like a star in the sky. Which is so cool to see.
Answer:
Mass = 40 kg Weight = 64 N
Explanation:
Mass does not change. 40 kg on Earth = 40 kg on the moon = 40 kg on Saturn, etc.
Weight = Force = Mass*Acceleration
So, Weight = 40 kg * 1.6 M/s^2 = 64 newtons
