You are a biologist and you capture 20 frogs and tag them all. 2 months later you then recapture 20 frogs, yet only 13 are marked. What is your estimate for the population density (rounded up to the nearest whole) ?
Responda
20
13
31
2
Questão 2
Questão
What are the 4 ways that an organism is classified by?
Responda
Physical Structure
Ecological Succession
Embroyonic Similarities
DNA Sequencing
Reproductive Systems
Evolutionary Relationships
Questão 3
Questão
Deforestation is caused by demand for [blank_start]tropical hardwood[blank_end], [blank_start]agriculture[blank_end], clearing for [blank_start]building[blank_end] roads, [blank_start]forest[blank_end] fires.
Responda
tropical hardwood
agriculture
building
forest
Questão 4
Questão
Animals are tagged by...
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Blu-tack
Tags
Banding
Collars
Paint/Dye
Binomial Nomenclature
Questão 5
Questão
[blank_start]Eutrophication[blank_end] can be repaired and/or prevented by the [blank_start]reduction[blank_end] of the use of [blank_start]phosphorus[blank_end] in detergents, better use of sewage [blank_start]treatments[blank_end] and [blank_start]slow[blank_end] release fertiliser.
Responda
reduction
love
phosphorus
hydrogen
pablo
soap
increase
big
treatments
storage
leakage
flushing
slow
fast
yellow
great
Eutrophication
Enhanced Greenhouse Gases
Fires
Overharvesting
Questão 6
Questão
What % of energy will each trophic level have, if the producer starts with 100%