A concrete obstruction built out into the water from a beach perpendicular to the longshore current is a(n) ____________________
Fill in the blank(s) with correct word
groin
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Which of these scenarios can occur when a keystone species disappears from an ecosystem? Assume a time frame 100 years between the disappearance and resulting effects.
A. Other species go extinct. B. The population of the rest of the species explodes. C. Speciation occurs. D. Native species become invasive species.
What do the minerals gold, sulfur, and talc have in common?
A) They are yellow in color. B) They are used almost as they are when removed from the ground. C) They are soft in texture. D) They are expensive to purchase.
What is the biggest cause of Earth's internal heat? What will be an ideal response?
The main process that happens during the alpha type of radioactive decay is
A. an atom splits into two pieces. B. an electron is given off. C. an electron is absorbed and turned into a neutron. D. an alpha particle combines with a small atom to make a larger one.