You were looking at an organism that was microscopic, but too small to be magnified with a compound microscope. You also need the image to be of the outside surface of the organism. Of the microscopes below, which option is the best fit for the criteria you need to meet? A) transmission electron microscope
B) Compound light microscope
C) Scanning electron microscope
D) Dissection microscope

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.

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.

the answer would be d : p