Affiliate Marketing Secrets

I need to take pictures of a list of bio terms and put in a powerpoint and explain how each picture fits the term. Heres the words i need help on:
Population
Community
Ecosystem
Organism with Type III SUrvivorship Curve
Density dependent factor
Density independent factor
R Strategist species
Ecological Niche
Parasitism
Mutusalism
Commensalism
Climax community
Keystone species
succession
Biodiversity
Heterotroph
Decomposer
Euthrophication
Biological magnification
climate change
interspecific competition
intraspecific competition
Pioneer species
food web

where can i find shoes like theses for under $50.00
http://www.my-wardrobe.com/sam-edelman/putty-renzo-suede-ankle-boot-stud-heel-277774?c_id=wgusd&utm_source=webgains_affiliate_usd&utm_medium=affiliate&utm_campaign=webgains_affiliate_usd&_$ja=tsid:9732&cm_mmc=affiliate-_-webgains-_-US-_-my-wardrobe