Answer:
sun
Explanation:
there would be no life whatsoever if we have the sun.
Answer:
E. Variations in Earth's orbit occur gradually over 100,000 years.
Respiratory system helps in breathing and it leads to exhalation of the gas carbon dioxide which is not required by the body. The integumentary system is the first line of defense and protects the body from invadig microbes, dust, and other harmful substances. The digestive system protects the body by enabling digestio of food and providing energy to sustain, further the toxic waste materials are also released during the process.
Answer:
false
Explanation:
not everyone has radial symmetry
Answer:
New moon, first quarter, full moon, and last quarter.
