Answer:
Azurite and Magnesite react with hydrochloric acid.
Explanation:
These 2 rocks contain the carbonate mineral calcite dolomite. Carbonate minerals are unstable in contact with hydrochloric acid. When acid begins to effervesce (fizz) on a specimen, a reaction takes place and bubbles of carbon dioxide evolve, thus indicating the presence of minerals like calcite dolomite.
Hope my answer is correct and helpful :)
The answer is 4. Atria. The left and right atria are smaller chambers that pump blood into the ventricles.
Answer:
The mass of a star determines its life cycle, that is, more the mass, shorter will be its life cycle. The mass of the star is determined by the concentration of matter, which is found within its nebula. In the nebula, with time, the hydrogen gas comes in close proximity with each other due to gravity and starts to spin.
With the brisk spinning, the gas heats up and turns into a protostar. The temperature now reaches 15,000,000 degrees and within the core of the cloud, the phenomenon of nuclear fusion takes place. The cloud now contracts a little, starts to glow brightly, and turns stable. The cloud now becomes a prime sequence star, and will stay in this phase for millions of years, the Sun of our galaxy is in this stage at the moment.
Answer: Neutrophils exhibit pseudopodia.
Neutrophils flatten and squeeze between the endothelial cells of capillary walls as a response to stimuli and cell adhession molecules on the endothelial walls.
Explanation:
Neutrophils are white blood cells that play major role in immune system. They circulate round the bloodstream and when they sense pathogens in the body, they move to the site and start killing the invading bacteria.
Neutrophils flatten and squeeze between the endothelial cells of capillary walls as a response to stimuli and cell adhession molecules on the endothelial walls.