The observation that Darwin made that suggested there had been geological changes in Earth's history were the giant tortoises. The correct option among all the options that are given in the question is the first option or option "A". Darwin was born on 12th of February in the year 1809 and died on 19th of April in the year 1882.
The force of abrasion, or what occurs when two factors in a particular environment cause friction and start to disintegrate. The walls get hit by hard winds that slowly file down the composition of the canyon, resulting in the walls becoming deeper.
A "migrant worker" is a person who either migrates within their home country or outside it to pursue work<span> such as seasonal </span>work<span>. </span>Migrant workers<span> usually do not have an intention to stay permanently in the country or region in which they </span>work<span>. </span>Migrant workers<span> who </span>work<span> outside their home country may also be called .... </span>
Answer: A constructive plate boundary creates ridges
Explanation: A constructive plate boundary, sometimes called a divergent plate margin, occurs when two tectonic plates move apart. Volcanoes are formed as magma wells up to fill the gap and molten rocks from the mantle below spread out and harden, eventually forming a ridge of new land/rock. The Mid-Atlantic ridge is an example of a constructive plate boundary.
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Soil form as rock is broken down by weathering and mixes with other materials on surface. soil is constantly being formed wherever bedrock is exposed. over time soil develops layers called horizons. a soil horizon is a layer of a soil that differs in color and texture from the layers above or below it.