Answer:
When a meteoroid enters the Earth's upper atmosphere, it heats up due to friction from the air. The heat causes gases around the meteoroid to glow brightly.
Explanation:
Answer:
b.they're all multi-cellular organisms
Answer:
It helps the cactus live a long time between rainstorms.
Explanation:
A thick, waxy coating keeps the water inside the cactus from evaporating.
The contractions of the heart is what creates out blood to pulse through out body and is the basis of our blood pressure; which means this statement is TRUE.
The systolic number (top) of the blood pressure is our heart physically pushing the blood out of the heart and to the rest of the body.
The diastolic number (bottom) of the blood pressure our heart at rest when it has just finished with one pump.
