In 1974,a Radio Message Was Sent Out from the Arecibo

question 59

Multiple Choice

In 1974,a radio message was sent out from the Arecibo observatory in Puerto Rico.How far has it gotten,approximately?

• A)just beyond our Solar System
• B)not even to the nearest stars
• C)just a miniscule fraction of the distance across the Milky Way
• D)almost to the center of the Milky Way
• E)beyond the Milky Way,to the Andromeda galaxy

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Definitions:

Waterlogged

A condition where the soil is so saturated with water that there is insufficient oxygen for plant roots to breathe, often leading to plant stress or death.

Permeability

A measure of the ability of a material (such as soil or rock) to transmit fluids, typically referring to the ease with which water, oil, or gas can pass through.

Porosity

The measure of empty spaces in a material, allowing it to hold water or air, critical in evaluating soil health, water filtration, and material properties.

Pore Space

The voids or gaps between soil particles, which can hold air or water, essential for plant growth and the movement of groundwater.