The correct answer is - biosphere conditions.
The ecosystems and the structure of the vegetation are parts of the wider term that is the biosphere. According to that, any changes that will appear in the functioning of the ecosystems, or if the structure of the vegetation is affected by something, it means that the biosphere is experiencing changes, thus it is becoming affected by this changes.
Before we carved pumpkins, the Irish chiseled creepy faces onto turnips. Pumpkins with ghoulish faces and illuminated by candles are a sure sign of the Halloween season. The practice of decorating jack-o'-lanterns originated in Ireland, where large turnips and potatoes served as early canvasses.
The correct answer is B. Placas tectónicas.
Explanation
Las placas tectónicas son los fragmentos de la corteza terrestre que están flotando sobre las capas de roca fundida (conocida como la astenosfera). En la tierra existen al menos 15 placas principales y más de treinta placas de tamaño mínimo. Las placas están en constante movimiento por las corrientes convectivas de la astenosfera no que le da origen a fenómenos como los volcanes, los sismos, la formación de cadenas montañosas y dorsales oceánicas. De acuerdo a lo anterior, la respuesta correcta es la B. Placas tectónicas.
I think it would be false because it realates with respiratory
The index fossils are fossils that are found in the rock strata of certain geologic period, but they are also fossils that are very common and can be found in numerous places around the globe.
Because they can be found all over the globe, and they are indicative of certain geologic period, the geologists have started to use them as a simple way of determining the age of the rock strata. While this method can not provide the geologists with an accurate year for the formation of the rocks, it is still able to determine the relative age of the rocks. By determining the relative age with such ease by using the index fossils, the geologists are able to immediately make conclusions about the rock strata, have basic information about it, and largely be aware of the processes that formed them and influenced them.
