Answer:
The plant is photosynthesizing and using up the CO2.
Temperature and pH levels are both correct
The answer is 4Fe+3O2→2Fe2O3
Answer: The population size will fluctuate as individuals adapt to the reduced availability of the limiting factor.
seed coat protects the cotyledons and embryo from outer environment and from attack of pathogens
pollen grain has a sculptors covering with weak points(germ pores) in it through which pollen tube comes out.
A spore is generally protected by 2-3 tough resistant walls around to tied over the unfavourable conditions.
