20 points! which would be best categorized as heat transfer by convection? usuing a heat blanket to get warm touching a metal spoon that's boiling in water noodles rising and falling apart in boiling water wearing a white shirt to stay cool on a summer day ! 20 points!

What does the xylem do? stores the glucose captures the sunlight absorbs oxygen into the leaf carries water from the roots to the leaves

What best discribes the relationship between wavelength and frequency in a electromagnetic wave

Suppose a pair of chemical compounds a and b can react in two different ways: a + b -> c reaction 1 gives product c. a + b -> d reaction 2 gives product d. the following facts are known about the two reactions: . reaction 1 is endothermic and reaction 2 is exothermic. if a reaction vessel is charged (filled) with a and b , then at first d is produced faster than c. use these facts to sketch a qualitative reaction energy diagram for both reactions. note: because these sketches are only qualitative, the energies don? t have to be exact. they only have to have the right relationship to each other. for example, if one energy is less than another, that fact should be clear in your sketch.