Analyze and Conclude 1. Compare and Contrast What features do the cells you observed have in common? How
are they different from one another?
2. Use Models Study Figure 8-5, which shows different types of cells and some of their
structures. Which of these cells or structures do you think you observed and sketched?
3. Classify Review your sketches, and then classify the slides of cells into two or three
groups. Explain your classification scheme.
4. Ask Questions Pose questions based on your observations that would help you better
classify and identify the cells you studied.
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the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.

digestion

it excretes wastes

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.