What kind of leaf is this

Flock x flock y flock z total pieces of food eaten (from previous page) 147 93 60 food percentage* % % % simulated number of birds in flock for 3rd generation** * divide each flock's total pieces of food by 300, the total number of pieces of food eaten. ** multiply the food percentage for each flock by the total number of birds (30).

Draw the structure of dna nucleotide with adenine as nitrogenous base

What is the difference between how ionic and covalent bonds form