The Amazon Rainforest is clear-cut so it can be used for farmland. Which of the following components is a biotic factor decreasing this land resource? Human activities
Wildfires
Air composition
Air temperature

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?

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

Witch theory suggests all living things are made up of cell or cells