explain how some abiotic and biotic factors affect communities, including environmental conditions, toxic chemicals, availability of food and other resources, and the presence of predators and pathogens
explain how some abiotic and biotic factors affect communities, including environmental conditions, toxic chemicals, availability of food and other resources, and the presence of predators and pathogens
describe how to carry out a field investigation into the distribution and abundance of organisms in an ecosystem and explain how to determine their numbers in a given area PAG3
the context of data related to organisms within a population:
a) calculate arithmetic means b) use fractions and percentages c) plot and draw appropriate graphs selecting appropriate scales for the axes d) extract and interpret information from charts, graphs and tables