One is were you bang someone else to reproduce and the other is where you bang yourself to reproduce
The kidneys remove dissolved waste in the blood
Hope this helps!
Electrical changed to thermal I’m pretty sure
Answer:
Photosynthetic organisms were making oxygen, but it reacted with the iron dissolved in seawater to form iron oxide minerals on the ocean floor, creating banded iron formations. ... The oxygen that is now in the Earth's atmosphere was not there at the beginning.
Explanation: