Which of the following provides the best indication that light is required for the activation of electron transfer reactions in chloroplasts?
а
b
Including multiple trials for all the samples
Comparing the observed results for sample 2 and sample 3
Repeating the entire experimental procedure at night
Calculating the rate of change of the absorbance for sample 1
С
d

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation:

i know can you plzz me with this question im sorry i didt answer your question i just need hel.

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this

point counts

mark brainliest!