Answer:
As the angle of impact changes, so does the appearance of the resulting stain. A blood drop striking a smooth surface at a 90° angle will result in an almost circular stain; there is little elongation, and the spines and satellites are fairly evenly distributed around the outside of the drop.
Explanation:
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Yes, they do. The chloroplasts contain chlorophyll (aka green pigment) and is where photosynthesis takes place. Animals obviously don't photosynthesize, which is how you can remember that animal cells do not have chloroplasts.
Answer: vertebrates have a skeletal structure with a spinal column or backbone. Invertebrates have no backbone, while vertebrates have a well-developed internal skeleton of cartilage and bone and a highly developed brain that is enclosed by a skull. Due to the lack of a supportive system, a majority of invertebrates are small.
Explanation:
