Some small isolated populations of asexual species often have little genetic variation among individuals, whereas large sexual populations often have great variation. Two major factors are responsible for this variety: mode of reproduction and population size.
What factors most strongly influence the type of biome that forms in a particular place on land what factors determine the type of aquatic system?
Terrestrial biomes’ distributions are most strongly influenced by climate, which can be summarized in a climate diagram of average monthly temperature and precipitation. Water temperature, depth, salinity, dissolved nutrients, wave action, currents, and type of substrate shape aquatic ecosystems’ distributions.
What factors determine the type of aquatic system that may form in a particular location?
D. In aquatic systems, the key factors determining the types and numbers of organisms are temperature, dissolved oxygen, sunlight availability, and nutrient availability. 1. Photosynthesis is largely limited to the upper layers, or photic zone, which can be diminished by turbidity.
What scientific law explains why vegetarians have a much lower environmental impact than meat eaters?
Using the concepts of trophic levels and energy flow, explain why the ecological footprint of a vegetarian person is smaller than that of a meat eater. Because meat eaters get less energy due to the 10% law.
What organisms are most often considered keystone species?
The type of organism that is most often considered a keystone species are apex predators.
Why is aquatic ecology important?
Healthy aquatic ecosystems can assimilate and purify low levels of pollution, resulting in drinkable and swimmable conditions. … Aquatic systems such as lakes, ponds, and wetlands also provide important hydrological support for human activities through their roles in water conveyance and storage.
Why are aquatic ecosystems important?
Aquatic ecosystems perform numerous valuable environmental functions. They recycle nutrients, purify water, attenuate floods, augment and maintain streamflow, recharge ground water, and provide habitat for wildlife and recreation for people.
Why does vegetarian leave a smaller ecological footprint than an omnivore?
Vegetarians need to ingest less chemical energy than omnivores. There is an excess of plant biomass in all terrestrial ecosystems. Eating meat is an inefficient way of acquiring photosynthetic productivity.
How does going vegetarian help the environment?
Being vegetarian helps reduce pollution of our streams, rivers, and oceans. Pollution from livestock production largely comes from animal waste, which can runoff into our waterways and harm aquatic ecosystems, destroy topsoil, and contaminate the air – which all have harmful effects on wild animals AND humans.
Why are buying habits important to determining an ecological footprint?
Buying habits are important for determining ecological footprint because not all products or product sources have the same impact.