Answer: effects of the evolution of photosynthesis. Photosynthetic organisms dramatically increased atmospheric oxygen levels between 2 and 2.5 billion years ago. This change created selective pressure favoring organisms that used oxygen to produce energy-containing molecules.
change the wording a little bit.
Explanation:
A quadrat is a simple device for marking out a small area. For young children at primary school the quadrat is often a convenient way of focusing a pupil's attention on a particular small area. At secondary level, pupils should understand how quadrats can be used to sample a larger area. By recording information from a number of quadrats placed within a larger study area, they can obtain a representative sample of the whole area, which may be too big to describe in full.
YAGAS HÍ PNAGALOJANG 1: GOPA TAKAHOO
The population of beetle will increasingly become green, with subsequent generations, until it becomes the dominant phenotype. This is because the green beetles will be able to camouflage with their environment and avoid being preyed on by the birds as compared to the black beetles. Therefore, the green beetle will have a high chance of reaching the reproductive stage and passing its genes to the next generation as compared to the black beetle.