Answer:
endosymbiosis.
Explanation:
By the beginning of the 20th century, researchers thought that plastids and mitochondria could come from bacteria. These would have been ingested by primitive cells and live within them in symbiosis.
Answer:YES
Explanation:A PDA is a type of congenital heart defect. A congenital heart defect is any type of heart problem that's present at birth. If your baby has a PDA but an otherwise normal heart, the PDA may shrink and go away. Some children need treatment to close their PDAs.
Seismic Waves!
Hope this helped :-)
Answer:
Accumulation flooding occurs because the ground is completely filled with water and there is no longer a zone of dry land.
Explanation:
Flood is the overflow of water on the land which is usually dry throughout the year. It occurs when more water comes in the river due to rainfall or breaking of dam. But mostly flood occurs, due to melting of ice on the poles because of global warming. Global warming refers to the increase in average temperature due to presence of greenhouse gases such as carbondioxode, methane and water vapors etc in the atmosphere.
