Biology, 13.07.2019 18:30, laqu33n021
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.
Answers: 1
Biology, 21.06.2019 23:50, jennamae9826
Which statement about the immune system is false? a. lymphocytes reduce inflammation, b. b cells remember specific pathogens. c. most white blood cells kill bacteria d. white blood cells are made in lymph nodes.
Answers: 1
Biology, 22.06.2019 03:00, babygirlqueen5588
Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.
Answers: 2
Biology, 22.06.2019 10:30, cordovamaria22
Which is a function of vascular tissue? a. to perform photosynthesis b. to transport water and nutrients c. to absorb minerals and sugar d. to interact with soil fungi
Answers: 1
1.) our galaxy is called the point) a.) local group b.) orion c.) andromenda d.) milky way 2.) abo...
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