A neutral atom possesses an atomic number of 15 and an atomic mass of 31. Three electrons are gained. What is the result of this conversion?
a new isomer of the element

a negatively charged ion

a new isotope of the element

a positively charged ion

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees

Why is a mushroom considered a heterotroph

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.