Answer:
The main difference between them is that; Wegener's Continental Drift postulates that earth was made up of a single continent, while the theory of Plate Tectonics states that earth's surface is broken into numbers of shifting plates or slabs.
Explanation:
Wegener's Continental Drift was a theory set forth by <em>Alfred Wegener in 1912. </em>He explained how continents shift positions on earth's surface. This movement happened over geologic time relative to each other, thus appearing to have "drifted" across the ocean bed.
While on the other hand, the Theory of Plate Tectonics is the theory that the outer shell of earth is divided into several plates that glide over the mantle(the rocky inner layer above the core). The plates act like a hard and rigid shell compared to Earth's mantle.
Answer:
A
Explanation:
because food shortage is a basic need
Explanation:
The Smith–Lever Act of 1914 is a United States federal law that established a system of cooperative extension services, connected to the land-grant universities, in order to inform people about current developments in agriculture, home economics, public policy/government, leadership, 4-H, economic development, coastal issues (National Sea Grant College Program), and many other related subjects. It helped farmers learn new agricultural techniques by the introduction of home instruction.
Answer:
8 cm and 9 cm
Explanation:
To estimate the sides of triangle we must understand that any side of a triangle is greater than the differences between any two sides and also less than the sum of the two sides.
In this problem;
One of the sides is 13cm;
According to our theorem, this sides is less than the sum of the other two sides and greater than difference between the two sides.
8 cm and 9 cm is the correct choice;
if the other two sides are 8cm and 9cm;
9cm - 8cm = 1cm
9cm + 8cm = 17cm
13cm is in between them.
