Alife science student uses a compound microscope to look at a slide of human tissue. he is not sure what part of the body the tissue is from, but makes an educated guess based on the cells he sees on the slide. there are hundreds of round disks with no nucleus, as well as a couple of purple-colored spherical cells. the student would most likely guess that the tissue is of: (a) bone(b) tymus(c) blood(d) muscle(e) lung

C

Explanation:

Blood contains red blood cells (erythrocytes) that do not contain nuclei and are biconcave to allow them to carry more oxygen for diffusion. Therefore the round disks with no nuclei are red blood cells.

The purple-colored spherical cells are probably blood platelets if they are small or they could be white blood cells (lymphocytes) if they are larger.

explanation:

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.