Rocks form in horizontal layers. However, as shown along mountainsides, rock layers can become twisted or bent. The work of James Hutton and Charles Lyell helped to explain observations of twisted or bent rock layers. What was one of their conclusions? A. Earth is extremely old, and Earth processes acted gradually to twist or bend rocks. B. Earth is only a few thousand years old, and Earth formed with many twisted or bent rocks. C. Earth is only a few thousand years old, and Earth processes acted much more rapidly in its early history. D. Earth is extremely old, and Earth formed with many twisted or bent rocks.

A. Earth is extremely old, and Earth processes acted gradually to twist or bend rocks.

Explanation:

The land is a system that lives in constant movement, in addition to being subjected to several factors that can modify its structure and composition. The earth is a very old planet and has been subject to these factors since its creation. In addition, more factors appear with the passage of time, creating several terrestrial processes that have the ability to gradually modify the earth even geologically, being able to twist and bend the rocks.

the overall balanced equation

6co2 + 6h2o > c6h12o6 + 6o2

sunlight energy

where: co2 = carbon dioxide

h2o = water

light energy is required

c6h12o6 = glucose

o2 = oxygen

a few examples of ethical concerns involving genetically engineering of humans include

-privacy of genetically tested people

- potential side effects

-long term effects