A sediment core is removed from the floor of an inland sea. The sea has been in existence, off and on, throughout the entire time that terrestrial life has existed. Researchers wish to locate and study the terrestrial organisms fossilized in this core. The core is illustrated as a vertical column, with the top of the column representing the most recent strata and the bottom representing the time when land was first colonized by life.

In order to assign absolute dates to fossils in this sediment core, it would be most helpful if

A. volcanic ash layers were regularly interspersed between the sedimentary strata.
B. the sediments had not been affected by underwater currents during their deposition.
C. metamorphic rock strata alternated with sedimentary rock strata.
D. we knew the order in which the fossils occurred in the core.
E. fossils throughout the column had equal ratios of a parental radioisotope to its daughter isotope.

Option A. is correct

Explanation:

Given:

A sediment core is removed from the floor of an inland sea. The sea has been in existence, off and on, throughout the entire time that terrestrial life has existed. Researchers wish to locate and study the terrestrial organisms fossilized in this core. The core is illustrated as a vertical column, with the top of the column representing the most recent strata and the bottom representing the time when the land was first colonized by life.

Solution:

A sediment core refers to a mud collected by the scientists from the bottom of lakes to interpret past ecosystems.

To assign absolute dates to fossils in this sediment core, it would be most helpful if volcanic ash layers were regularly interspersed between the sedimentary strata.

it is very hard for the climatologists to precisely predict how will the global temperatures be changing so there's lots of models, some of which differ significantly, this is due to multiple factors, and probably the most important is the human activity.

humans have been a key factor in climate change around the globe since the start of the industrial revolution, and in the past few decades the consequences are becoming more obvious. there's lots of emission of pollutants in the atmosphere as well as changing the environment on the surface itself, so it's really hard to predict how will that go in the future because there's some countries that are reducing the damage and are going towards green energy, while others are stubbornly continuing with pollution and damages to the environment.