Plants respire all the time, whether it is dark or light, because their cells need energy to stay alive. But they can only photosynthesize when they have light.
The oxidation of water occurs during photosynthetic electron transport during the light reactions of photosynthesis. In the absence of a source of light energy (dark reactions have no direct requirement for light energy), oxygen is not produced.
Pectinate muscles are found on the internal walls of the right and left atria. The correct option is C.
<h3>What are pectinate muscles?</h3>
Pectinate muscles are ridge-like muscle elevations. They are parallel to each other and resemble comb teeth. They can be seen clearly inside the right atrium.
Pectinate muscles are found on the internal walls of the right and left atria.
Thus, the correct option is C.
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Answer:
Empirical scientific findings are based on observation, research and experiment. All the findings in empirical science has a unbias scientific proof that support or inform society's decison making. Empirical scientific findings uses different research methods such as survey researc, qualitatarch and quanititative research.
For example: Empirical findings used survey research to proof growing concern of depletion of energy resources and awareness about renewable energy.
Separate the soil from clay, sand, and silt. Then test each soil to find which is stronger or weak when it’s wet or dry.
The answer would be C. tree roots split apart ricks in the ground
