What is the main function of vascular tissues in humans? What are the parts of the plant that transport food and water? What is the flower used for? What are feedback systems and two examples of feedback systems. What is bias in science? What are the different types of variables? What are the different units of measurements?
What is the main function of vascular tissues in humans? What are the parts of the plant that transport food a
in humans, the vascular tissue, like veins and arteries, and such, carry blood throughout the body. the hemoglobin in the blood can carry oxygen, and carbon dioxide is also carried out via the lungs, also nutrients are carried in there too
the xylem transports water throughout the plant body, and the phloem transports sugars from the source to the sink
the petals of the flower r used to attract pollinators, like birds and bees to the plant, so the pollen (male gametes) can be taken from the anther to the stigma, where it can be dropped off (pollinatation) and a pollen tube can grow down the style towards the overy to fertilize the egg
there are negative feedback systems and positive
negative - there are so many examples like the sodium-potassium pump
positive - contractions during birth
variables - independent variable - the variable that changes in the experiment (usually only one)
dependent variable - does not change
many diff. units of measurements, like mols, grams, calories, etc.
Why do hotels always use white towels
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