The image shows a week-old chick embryo. What can you conclude about its current stage of development? Help me please, it’s multiple choices

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?

What type of competition exsist between two species. turtles and fish

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from