Some <u>birds</u> are both primary consumers and secondary consumers.
<u>Explanation:</u>
Primary consumers are the class of animals that are feeding upon the producers as their primary food. Secondary consumers are the class of animals that are feeding upon a primary consumer to feed themselves.
Some of the birds like sparrow, humming birds etc feed on fruits and seeds of plants to maintain their lives. They are thus the primary consumers. Others like eagle, crow eats on flesh of primary consumers. So they are secondary consumers. Thus birds can be both primary consumers and secondary consumers.
Answer: B. Any cells of the human body or placenta.
Explanation:
All types of cells in the human body can develop from pluripotent stem cells. Embryonic stem cells are also considered pluripotent.
Answer: Winds are primary energy source for currents that flow horizontally in the ocean surface layers (less than 100 to 200 m deep). Hence surface currents often called “wind driven currents” or “wind drift currents”.
Currents that flow deep in the oceans below the level affected by winds are generated by convection caused by variations in water density. Higher-density waters sink and displace (push aside or up) less –dense water. Because density is determined by temperature and salinity, deep-water circulation is called “thermohaline circulation”.
The winds are the primary source for both ‘wind driven circulation’ and ‘thermohaline circulation’ is the sun. Winds are generated by the density variations in the earth’s atmosphere caused by solar heating and radiative and evaporative cooling.
Thermohaline circulation is driven by density difference between ocean water masses caused by temperature and salinity variations.
Explanation:
This is the main cause to form a wave over the sea surface.
The body would not be able to cool itself so excess heat would remain in the body instead of being lost via evaporation of sweat. The rise in temperature would not be brought back to normal which would affect thermo-regulation in the body.
The high body temperature would most definitely affect the activity of enzymes in the body which control most metabolic reactions.
Explanation:
Consider a stab wound in upper abdomen which has pierced through upper/ventral wall of stomach. This is what medically called as gastric perforation and requires emergency surgical management within 4 to 12 hours of injury. If left unattended the person will develope distension of abdomen with vomitting within 4 to 6 hrs, fever within 12 hrs, all because of infection spreading to rest of abdomen ( medically called Peritonitis). If no surgery is undertaken the person will die due to sepsis within 24 to 48 hrs.
Situation 2: stab would injuring major vessel or even liver will pool blood in abdomen ( medically Hemoperitonium) will further worsen the situation and wld need more intensive management. If not treated properly such person can die within 6 to 12 hrs due to hypovoluemic shock.
