Answer:
1.Atria push blood into the ventricles
2.Venticles push blood out of the heart.
D. Silicon is the correct answer.
<h2>Answer:</h2>
By digging tube wells
<h2>Explanation:</h2>
Water can be obtained from the land by digging a hole in the earth surface. The process is called boring. A tube well is a type of water well in which a long, 100–200 millimeters-wide, stainless steel tube or pipe is bored into an underground aquifer. In this way people who supply their own water to other areas or people generally obtain it by using tube wells where they attach a motor to it for speedy suction and then transfer the water to destination by using pipes.
Answer:
Explanation:
The FitnessGram Pacer Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. Students begin at the starting line. Once the test begins, the running speed starts slowly, but gets faster each minute after you hear the signal (beep). A single lap (length of the basketball court), should be completed when you hear this signal (ding). The second time you fail to complete a lap before the sound, your test is over.
C. when did the earth form? and what is it made of?
