True of false: Water is made of cells

If many different species live in an ecosystem, this the ecosystem to fill its a. populations b. niches c. producers d. communities

According to the big bang theory, after the "bang," the universe remained dark until about  300,000 yearsone billion yearsthree minutesthree billion years  later, when neutral atoms began to form.

Why does bubbling occur when vinegar mixed with baking soda