Biology

Denitrifying bacteria convert ________ to ________.

Started by saliriagwu

Which process represents a step in the nitrogen cycle?

Started by ishan

Which statement about the phosphorus cycle is false?

Started by panfilo

Carbon mainly cycles between the biotic and abiotic worlds through the processes of

Started by nenivikky

Given that CO2 is produced by cellular respiration, why does the amount of CO2 in the atmosphere ...

Started by go.lag

Which substance is cycled between organic matter and abiotic reservoirs?

Started by Bob-Dole

One simple thing that you can do to help safeguard the environment is to eat a diet consisting only of

Started by kaid0807

About how much of the energy in the producers of an ecosystem will be available to secondary ...

Started by cdr_15

In an average ecosystem, about how much energy is present in the organisms at a given trophic level ...

Started by LCritchfi

For a given area and time period, the amount of solar energy converted to chemical energy in organic ...

Started by pragya sharda

A biology student takes fish, algae, pond plants, invertebrates, and bottom sediment from a local ...

Started by mwit1967

Which process does not occur in ecosystems?

Started by Lisaclaire

The flow of ________ into ecosystems occurs in one direction only, while ________ are recycled ...

Started by RRMR

Non-native species that are introduced to new environments, spread far beyond the original point of ...

Started by crobinson2013

When a New England farm is abandoned, its formerly plowed fields first become weedy meadows, then ...

Started by bobbysung

During ecological succession, the species composition of a plant community generally

Started by karlynnae

A keystone species that is a predator will

Started by Sufayan.ah

The number of species in a community is called species

Started by geoffrey

Which statement regarding food webs is true?

Started by lracut11

In a certain ecosystem, field mice are preyed on by snakes and hawks. The entry of wild dogs into ...

Started by debasdf

Organisms that digest decaying organic material are

Started by tichca

In a food chain consisting of phytoplankton zooplankton fish humans, the humans are

Started by kfurse

A hypothetical community on a barren mid-Atlantic island consists of two fish-eating seabirds (the ...

Started by lunatika

In a hypothetical food chain consisting of grass, grasshoppers, sparrows, and hawks, the grasshoppers are

Started by drink

The freshwater leech is an organism that feeds off of the blood of other organisms such as frogs and ...

Started by tuffie