Answer:
Fe + CuSO4(aq) → FeSO4(aq) + Cu(s) The type of reaction is a displacement reaction. In this reaction, the highly reactive metal iron replaces the Copper in copper sulphate by giving up two electrons and gets oxidized and forms a new compound called ferrous sulphate.
The olfactory system is involved in the sense of smell. The receptors of smell are not routed through the thalamus. The signals id directly routed from the olfactory bulb to the olfactory cortex and thalamus is not contacted in between. This is the difference between the taste and smell receptors, although both of their receptors are stimulated from mucus/saliva in the mouth.
The correct answer is Bolas spider. Bolas spiders usually spins a lasso to catch their preys. Instead of secreting the normal web which other spiders secrete, it secrete a stick capture net called bolas.
If you happen to believe the Earth is flat, you'll have a difficult time explaining global climate variations and seasons. If you accept the fact the Earth is a sphere, however, it's no problem. The variations are the result of two phenomena: the orbit of the Earth around the sun and the tilt of the Earth's axis relative to the orbit.