Which role does the cane toad play in the hawaiian islands?

native species

invasive species

uncontrolled species

endangered species

25) a student takes four samples of a white crystalline solid and places each in a well plate. on top of each sample, she carefully places 20 drops of clear mystery liquids a, b, c and d. her results for each well are: liquid a: the solid dissolves quickly. liquid b: the solid appears unchanged. liquid c: a brownish colored liquid is produced. liquid d: fizzing occurs and the well becomes warmer. in which well does a physical change occur?

An easy way to calculate the amount of energy available at each level is to what?

Which blood cell spend most of their time in the lymphatic system?