White blood cells They create antibodies to fight against bacteria, viruses, and other potentially harmful invaders. Neutrophils. They kill and digest bacteria and fungi. They are the most numerous type of white blood cell and your first line of defense when infection strikes.
Three advantages of sexual reproduction because of more genetic variation species,children different than parents,and able to produce more offspring because of mate.
Heterotrophic- has a nucleus and many different organelles
The correct answer is cyanobacteria (ancient cyanobacteria).
The huge concentration of oxygen in the atmosphere is believed to have been initially produced by the actions of ancient cyanobacteria. They are usually observed as symbionts with a number of another group of species, like coral, lichens (fungi), Azolla (pteridophytes), angiosperms, and others.
The atmosphere of oxygen was generated by various cyanobacteria at the time of Proterozoic and Archaean periods.
Answer is B
It is because I did this and got it right and also oil is a liquid so it will immediately stop whatever is coming.
