Draw the structure of the starting material needed to make 2-methylhept-3-yne using sodium amide in liquid ammonia

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i believe it is-

d.) gravity pulled particles of dust and gas together to form planets.

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.