1.) our galaxy is called the point) a.) local group b.) orion c.) andromenda d.) milky way 2.) about 60% of all known galaxies are classified as point) a.) spiral galaxies b.) elliptical galaxies c.) irregular galaxies d.) binary systems 3.) based on the observed red shifts in the spectral lines of distant galaxies, astronomers conclude that (1 point) a.) earth is in the center of the universe. b.) the universe is contracting. c.) the universe is expanding. d.) the universe is smaller than once believed.

If someone could do the first couple, just so i can see how it's done that would be great! 20 points. complete a dichotomous key for the 10 leaves on the common leaves sheet. the chart provided here allows for 11 pairs of statements. depending on how you build your dichotomous key, you may or may not need all of them, or you may need to add some.

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

Jasmine, at 33 months of age, is able to engage in some self-care behaviors but still has trouble with tasks such as putting on socks. a few months later, she accomplishes this same task relatively easily. the change in abilities is most likely due to