One very common function of an antenna of an arthropod would be for sensory. It is used by these organisms mainly for touch. Also, other uses would be sensing the motion of air, heat, sound and as well as taste and smell.
Answer:
B - It hits an object
Explanation:
Once light has been produced, it will keep travelling in a straight line until it hits something else.
Answer:
The hardness rating is 4.
Explanation:
Calcite sits at a hardness rating of 3 and is very easily scratched with a knife and/copper coin. This is where most Marbles, limestones, travertines, rate.
Meanwhile, Fluorite sits at hardness 4 and can be scratched by a knife.
The phosphorus cycle differs from the biogeochemical cycles in thatThe phosphorus cycle differs from the other major biogeochemical cycles
in that it does not include a gas phase; although small amounts of
phosphoric acid (H3PO4) may make their way into the atmosphere,
contributing – in some cases – to acid rain
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11- the number of protons is the same as the atomic number
