New research shows fertilization drives global lake emissions of greenhouse gases March 26, A paper published this week in the journal Limnology and Oceanography Letters is the first to show that lake size and nutrients drive how much greenhouse gases are emitted globally from lakes into the atmosphere. Thawing permafrost produces more methane than expected March 20, Methane CH4 is a potent greenhouse gas that is roughly 30 times more harmful to the climate than carbon dioxide CO2.
A phenotypic characteristic, acquired during growth and development, that is not genetically based and therefore cannot be passed on to the next generation for example, the large muscles of a weightlifter. Any heritable characteristic of an organism that improves its ability to survive and reproduce in its environment.
Also used to describe the process of genetic change within a population, as influenced by natural selection. A graph of the average fitness of a population in relation to the frequencies of genotypes in it.
Peaks on the landscape correspond to genotypic frequencies at which the average fitness is high, valleys to genotypic frequencies at which the average fitness is low. Also called a fitness surface. A behavior has adaptive logic if it tends to increase the number of offspring that an individual contributes to the next and following generations.
If such a behavior is even partly genetically determined, it will tend to become widespread in the population.
Then, even if circumstances change such that it no longer provides any survival or reproductive advantage, the behavior will still tend to be exhibited -- unless it becomes positively disadvantageous in the new environment.
The diversification, over evolutionary time, of a species or group of species into several different species or subspecies that are typically adapted to different ecological niches for example, Darwin's finches. The term can also be applied to larger groups of organisms, as in "the adaptive radiation of mammals.
A mode of coping with competition or environmental conditions on an evolutionary time scale. Species adapt when succeeding generations emphasize beneficial characteristics.
A person who believes that the existence of a god or creator and the nature of the universe is unknowable. An umbrella term for various simple organisms that contain chlorophyll and can therefore carry out photosynthesis and live in aquatic habitats and in moist situations on land.
The term has no direct taxonomic significance.
Algae range from macroscopic seaweeds such as giant kelp, which frequently exceeds 30 m in length, to microscopic filamentous and single-celled forms such as Spirogyra and Chlorella.
One of the alternative forms of a gene.
For example, if a gene determines the seed color of peas, one allele of that gene may produce green seeds and another allele produce yellow seeds.
In a diploid cell there are usually two alleles of any one gene one from each parent. Within a population there may be many different alleles of a gene; each has a unique nucleotide sequence.
The relation between the size of an organism and the size of any of its parts. For example, an allometric relation exists between brain size and body size, such that in this case animals with bigger bodies tend to have bigger brains.
Allometric relations can be studied during the growth of a single organism, between different organisms within a species, or between organisms in different species. Speciation that occurs when two or more populations of a species are geographically isolated from one another sufficiently that they do not interbreed.
Living in separate places. The unit molecular building block of proteinswhich are chains of amino acids in a certain sequence.Latest News Stay current on all projects, climate change solutions, and initiatives. Our love for coffee has a bigger price tag than meets the eye.
The paper cups that are used when we ‘take away’ coffee are slowly building up and polluting the environment. James Edward Hansen (born 29 March ) is an American adjunct professor directing the Program on Climate Science, Awareness and Solutions of the Earth Institute at Columbia benjaminpohle.com is best known for his research in climatology, his Congressional testimony on climate change that helped raise broad awareness of global warming, and his advocacy of action to avoid dangerous climate.
The Greenhouse Effect This essay is going to describe what the greenhouse effect is and what it benjaminpohle.com is also going to say what causes the greenhouse effect and the consequences of it.
A review of the research literature concerning the environmental consequences of increased levels of atmospheric carbon dioxide leads to the conclusion that increases during the 20th and early 21st centuries have produced no deleterious effects upon Earth's weather and climate.
Research Papers on the Greenhouse Effect The Greenhouse Effect Research Papers investigate the significant changes it brings to our climate. Evidence is mounting that, on earth, the “greenhouse effect” is bringing about significant changes in the climate.