Answer:
Every winter, Arctic sea ice grows around the pole, its frozen tendrils threading along northern coasts. Right now sea ice has just passed its peak coverage for the year, and will begin to shrink with the coming of spring. It’s a crucial time for polar bears, whose food supply is inextricably linked to sea ice.
And in recent decades, sea ice has been shrinking faster than ever. According to the National Snow and Ice Data Center, 2019 has the seventh-lowest sea ice cover in the Arctic since they began collecting satellite data 40 years ago.
This year “doesn't break any records, but it's the trend that matters,” says University of Alberta polar bear scientist Andrew Derocher. “The downward trend in Arctic sea ice across all months is the concern,” he says, and “now we wait to see what spring conditions bring.” (Read more about global warming’s link to polar bears.)
A cold spring allows ice to linger, giving polar bears easier access to one of their favorite foods: seals. A warm spring cuts short the availability of their food super-highway....
Genotype is all the information / genetic material of an individual.
the genotype is constituted by the set of hereditary characteristics specific to an individual and the phenotype corresponds to the expression of this genetic inheritance in a given environment. It reports on the anatomical and physiological characteristics of an individual. The existence of dominant and recessive genes explains that the same phenotype corresponds to different genotypes.
Phenotype is your physical characteristic as Brown for the color of your eyes or blond for the color of your hair
While Genotype is the combination of genes that you have (basically your two parents give you a genes for a characteristic and that's the scientific expression) so B = a hairy brown and b = a blond so you can have BB = you're brown Bb = you're brown or bb = you're blond
So for example your phenotype is to be brown and your genotype is either Bb or BB
Answer:
The two key components of ecosystem stability are resilience and resistance. Resistance is an ecosystem's ability to remain stable when confronted with a disturbance.
1. is the sun
2. is is waters the plants and help things grow
