Answer:
ExplanationA coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups.
Answer:
basophils:
Explanation:
primary phagocytic cells type that fights infection
Answer:supports the body
facilitates movement
protects internal organs
produces blood cells
stores and releases minerals
Explanation:
The skeletal system in animals helps in their movement, support and to maintain their shape.In humans ,it consists of bones,which works closely with the muscular system.unlike worms and arthropods that have hydrostatic and exoskeleton respectively, humans have endoskeleton.the bones have the following functions;
*It allows the animal move . The skeleton provides support for the body and through the flexible joints ,the body is able to move
*The skeleton protects the internal organs of the body by protecting them against impact.for examples,the ribs protect the lungs and the skull protects the brain.
*Certain cells in the bone produce immune cell and important components of the bone
*The bones also regulate the level of calcium in the blood
Answer: Option D
Explanation:
The practice which has been prevailing from a long time is considered as culture.Farming is also a type of culture which is being practiced from a longer period of time in the society.
The farming is also a type of culture which was invented somewhere and started spreading from there to other places.
This practice helped mankind in providing food and resources to the people of nation.
