The human body uses many different kinds of minerals, but there six that are considered essential. Which group is made up of only essential minerals?

calcium, magnesium, and iodide
magnesium, chloride, and zinc
potassium, phosphorus, and iron
sodium, calcium, and magnesium

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).

Classify the structures as homologous or analogous, depending on their structure and function.

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. which punnett square represents the correct way to set up the cross rryy  ´  rryy?