Help me please! for forensics!! is a pattern that helps to place an object in the scene; normally, the area in question lacks blood even though areas surrounding it show blood spatter stains.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

lysosome is this part of the cell is surrounded by a very thick outer membrane to protect the rest of the cell from its strong enzymes.