What does the immune system protect the body against? changes of the internal body temperature changes in the temperature of environment changes caused by harmful pathogens changes in the pH of the blood

Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials

The reactions that occur in the ribosome, where amino acids are combined to form proteins are anabolic or catabolic?

In which way are mercury and venus similar? they both rotate from east to west. they are both small and rocky. they both have thick atmospheres. they both are similar to earth in structure.