Answer:
See below.
Explanation:
A star's energy comes from the combining of light elements into heavier elements in a process known as fusion, or "nuclear burning". It is generally believed that most of the elements in the universe heavier than helium are created, or synthesized, in stars when lighter nuclei fuse to make heavier nuclei. The process is called nucleosynthesis.
Our Sun is currently burning, or fusing, hydrogen to helium. This is the process that occurs during most of a star's lifetime. After the hydrogen in the star's core is exhausted, the star can burn helium to form progressively heavier elements, carbon and oxygen and so on, until iron and nickel are formed. Up to this point the process releases energy. <u>The formation of elements heavier than iron and nickel requires the input of energy. </u>Supernova explosions result when the cores of massive stars have exhausted their fuel supplies and burned everything into iron and nickel. The nuclei with mass heavier than nickel are thought to be formed during these explosions.
Answer:
Differentiation
Explanation:
Cell differentiation occurs when stem cells become specialized cells
1.Blood is the liquid tissue that carries oxygen and nutrients round the living systems, passing through veins and arteries. It also carry carbon dioxide out of the living system towards the lungs for exhaling out. A normal blood sample should have the following components: PLASMA, RED BLOOD CELLS, WHITE BLOOD CELLS AND PLATELETS.
2. The plasma is the liquid components of the blood and is composed of water, ions, proteins, nutrients, dissolved gases, fat, hormones, wastes, etc. The plasma function as a transport medium to deliver nutrients, hormones, ions, oxygen, etc to all the cells in the body in order to maintain homeostatic balance. The red blood cell is responsible for transporting oxygen and carbon dioxide. The white blood cell are part of the immune system and fight against infections. The platelets are the part of the blood that are responsible for blood clotting when one sustain injury.
Answer:
Dissociate, a decrease in pH
Explanation:
Strong acids dissociate 100% in aqueous solution, and lower pH
Answer:
invertebrates are an animal lacking a backbone, such as an arthropod, mollusk, annelid, coelenterate, etc. they can be spiders crickets ya know
Explanation:
