Answer:
Muscular system--helps the body move.
Skeletal system-- provides structur to the body.
circulatory system-- circulates oxygenated blood through the body.
respiratory system-- exchanges gases in the body.
integumentary system-- helps receive signals from the outside world.
Answer: creating an ozone layer to shield life from UV rays
Cynobacteria or blue green algae is the strain of bacteria, which was able to produce oxygen in the primitive earth as a result of photosynthesis. The abundance of oxygen in the atmosphere formed the ozone layer in the upper atmospheric layers, these layers are protective enough to provide a shield against the harmful UV radiations incident on earth coming from the sun.
Sams drink was colder therefore didn’t melt the sugar like the hot coffee did so C)
Answer:
Its reactivity, or tendency to form chemical bonds with other atoms.
Explanation:
