Answer: the correct options are A(oxygen) and E ( Nitrogen).
Explanation: As humans we are able to survive in the planet earth due to its atmospheric composition. The Earth's atmosphere is composed of
Nitrogen(78%) and oxygen (21%). Currently, scientist from NASA has discovered existence of water in Mars. The elements they would look out for on Mars to see if we, as humans, could ultimately survive there is Nitrogen and oxygen.
The legs of an insect are used to taste things walk jump and climb.
wings are for flying and sometimes camouflage
The mouth parts are for piercing and sucking their prey
For compare it is that they are all form of precipitation
Genetic drift
- initially from same species however due to natural circumstances some of the species relocates resulting in them evolving based in surroundings hence the process of natural selection; the survival of the fittest
Genetic bottleneck
- due to a natural disaster or crisis a species almost becomes no existent resulting in the remaining organisms of such species to repopulate resulting in only the fittest organisms of that species surviving hence once again the process of natural selection
The greatest way to explain natural selection is Darwin in the Galapagos island with the finches; Darwin studied these birds and discovered based on geographical location the same species of bird had evolved as identified by the change in beak structure in order to scavenge for food. The best way to explain it is the survival of the fittest same with long neck giraffes all the short neck giraffes died off due to them not being able to reach the leaves to eat
Answer:
The primary function of the lymphatic system is <u>defending the body against both external and internal threats.</u>
Explanation:
The set of tissues and organs that participate in the immune response is known as the lymphatic system. Its main functions are to maintain the volume of blood and participate in the defense of the organism. It is made up of organs, vessels, nodes and lymphatic tissue. This system fulfills three basic functions: Defense: in the lymph nodes, the lymphocytes reproduce to respond to antigens; fat absorption: most of the fats are absorbed by the lymphatic system and subsequently transported to the blood and capillary exchange: it recovers substances that the blood flow has lost in the capillary exchange.