Answer: 95% of the earth crust
Explanation:Igneous rock make up about 95% of the earth crust. Igneous rocks are formed from solidified molten magma within the earth crust(intrusive) or outside the earth surface (extrusive).
A. Males produce four functional sperm while females produce only one functional egg.
Answer:
protein and polysaccharide substances called pyrogens, released either from bacteria or viruses or from destroyed cells of the body, are capable of raising the thermostat and causing a rise in body temperature.
Explanation:
protein and polysaccharide substances called pyrogens, released either from bacteria or viruses or from destroyed cells of the body, are capable of raising the thermostat and causing a rise in body temperature.
Answer:
bicuspid and tricuspid valve
Explanation:
Tricuspid valve separates right auricle and ventrical whereas bicuspid separates left auricle and ventrical.
they help by preventing the back flow of the blood by avoiding them to go to the position where they came from.