Answer:
D. organ systems
Explanation:
Organs and tissues that perform the same function are called organ systems
Answer: b bet
Explanation: ya ina enslaved
Answer:
Doppler Red-Shift Evidence
Explanation:
The Doppler red-shift of light observed from distant stars and galaxies gives evidence that the universe is expanding (moving away from a central point). This allows for Big Bang Theory, because after a “bang” occurs all of the matter moves away from the point of origin.
sorry what this means¯\_(ツ)_/¯