Bio unit 2
Terms
undefined, object
copy deck
- Together, _____ and _____ factors determine the survival and growth of an organism and the productivity of the ecosystem in which the organism lives.
- biotic, abiotic
- Regardless of whether they are held in common, environmental resources can be classified into two types: ____ and _____
- renewable, non-renewable
- Density-dependent limiting factors include competition, _____, parasitism, and disease.
- prediation
- Every living organism needs _____ to build tissues and carry out essential life functions. Like water, nutrients are passed between organisms and the environment through biogeochemical cycles.
- nutrients
- Unlike the one-way flow of energy, ___ is recycled within and between ecosystems.
- matter
- ______ is one of Earth's greatest natural resources. Many species have provided us with foods, industrial products, and medicines—including painkillers, antibiotics, heart drugs, antidepressants, and anticancer drugs
- biodiversity
- Carbon dioxide, methane, water vapor, and a few other atmospheric gases trap heat energy and maintain Earth's ____ range.
- tempature
- Many biologists are concerned about the biological effects of two types of global change: the thinning, or depletion, of the ozone layer and global _____.
- warming
- Only about __% of the energy available within one trophic level is transferred to organisms at the next trophic level.
- 10
- what is the main energy source for life on Earth. In a few ecosystems, some organisms rely on the energy stored in inorganic chemical compounds.
- sunlight
- Energy flows through an ecosystem in one direction, from the sun or inorganic compounds to autotrophs, ____ and then to various heterotrophs, ____.
- producers, consumers