1. The number of each electron in this shell determines how an atom combines with other atoms to form compounds.
2. The number of electrons in an atom's outermost valence shell governs its bonding behavior.
B cells produce antigen
t cell are helper,killer,memory cells
they hold memory of pathogens i the system
Answer: D - Genes move around on the chromosomes and could be located anywhere
Explanation:
Decomposer, they eat dead organic material
Tubes that deliver glucose to plants are called phloem.
