According to the theory of plate tectonics, the Earth's crust is broken into about 12 plates that float on hotter, softer rocks in the underlying mantle. The Earth's internal heat drives convection currents in the asthenosphere, moving the plates past one another very slowly. Plates move only inches each year, carrying the continents and ocean basins with them as they drift.
The majority of earthquakes worldwide occur at all but one location. That is
A) at tectonic plate boundaries.
B) where sediments deposit and form new layers.
C) where plates stick and then jump past each other.
D) where an ocean plate slides under a continental plate.

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.

How does the atmosphere to make earth livable? check all that apply. causes the seasons contains oxygen provides warmth creates important nutrients blocks harmful energy from the sun plz like !