Cells that become the undergo a to transition first. Fill in the blanks. A. Neural crest, proliferation, apoptotic
B. Neural crest, mesenchymal, apoptotic
C. Myotome, mesenchymal, epithelial
D. Sclerotome, epithelial, mesenchymal

Cells that become the sclerotome undergo a epithelial  to mesenchymal  transition first.

Explanation:

Since some of the epithelial cells transform into mesothelial cells or mesenchymal cells during the early development of embryos, which in turn give rise to Sclerotome, involved in the body's skeletal muscle formation.

Hence , the option D is correct .

they each offer a fresh glut of resources to the organisms that can arrive and exploit them. as individuals and new species continue to appear, they actively and passively alter the environment. competition for shared resources increases, local abiotic and biotic conditions shift, and the relative abundances of species change accordingly. the process is called ecological succession, and it is one of the earliest and most well-known concepts in ecology.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.