<span>tubercle
This kind of outgrowth is mostly common in bone formation as they are used for muscle formation and attached to the tendons. As they are in the skin of humans and animals they are also found in plants as well especially orchid , cacti and certain member of the pear family</span>
I think that the best word to fill into the gap is "solid".
Solid comes in opposition to other fundamental states of matter: liquid, gas, plasma (the last one can be characterized by high electric conductance).
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C is the correct answer they are asymmetrical.
Answer:
Energy comes to the earth surface in the form of sunlight. When the sunlight strikes the earth surface, some energy is absorbed by the earth through vegetation in the process of photosynthesis, while more are reflected back into the space but these light radiation trapped by greenhouse gases such as carbondioxide, methane and nitrous oxide etc which increases the temperature and causes global warming which changes our climate.
