Son variaciones en los ecosistemas acuáticos por efecto del cambio climático: 1)Aumento del nivel del mar e inundaciones y deslizamientos de terrenos susceptibles.
Disminución de las playas que son el hábitat de muchas especies que nidifican en ellas.
2)Aumento de las temperaturas de las aguas y cambio de la composición química de las aguas
3)Efecto sobre el fitoplancton que es un constituyente esencial en las redes tróficas marinas.

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

The table lists the observations students made about four specimens under a microscope. based on these observations, what specimens did the students examine? animal plant virus prokaryote cell membrane present ribosomes present lysosomes present nuclear membrane present cell wall present ribosomes present nuclear membrane absent cell wall present ribosomes present nucleus present large vacuole present reproduces inside of a cell nucleus absent rna present 2019 edmentum all rights reserved intl

To confirm when to exclude children from school it’s recommended that you refer to guidelines from which of the following organizations