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DIA [1.3K]
3 years ago
15

What were scientists studying when they made the first observations about the layers inside the Earth?

Chemistry
1 answer:
tatiyna3 years ago
4 0
Probably large earthquakes and how the seismic waves produces in such events are transmitted through the Earth gave the majority of information about the deep interior of the planet.
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Which two changes of state can be caused by removing thermal energy from a substance? choose two
crimeas [40]

Answer:

B and C

Explanation:

The correct answer is Condensation and Deposition

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3 years ago
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How is a cation different from a anion
masya89 [10]
Cation means a positively charged ion. Anion is a negative one
5 0
3 years ago
PLEASE PEOPLE I NEED HELP IN THIS PLEASEE ! !!! :,C
olganol [36]

Answer:

The last one is first, the first one is second, and the second one is third.

Explanation:

4 0
3 years ago
Use the drop-down menus to seled the correct responses to each question about ocean zones
chubhunter [2.5K]

Answer:

Intertidal zone

Neritic zone

Open-ocean zone

Note: the correct questions are found below;

In which zone do you find marshes and mangrove forests?

In which zone are plankton plentiful, providing plenty of food for the fish that live there?

In which zone would you find very little plant or animal life compared to other zones?

Explanation:

The intertidal zone, sometimes called the littoral zone, is the area of the marine shoreline that is exposed to air at low tide, and covered with seawater when the tide is high. Intertidal zonation refers to the tendency of plants and animals to form distinct communities between the high and low tide lines. Some microclimates in the littoral zone are moderated by local features and larger plants such as mangroves.

The neritic zone is the region of shallow water (200 meters depth) above the continental shelf where light penetrates to the sea floor.

Due to the abundant supply of sunlight and nutrients such as plankton in this zone, it is the most productive ocean zone supporting the vast majority of marine life.

The open oceans or pelagic ecosystems are the areas away from the coastal boundaries and above the seabed. It encompasses the entire water column and lies beyond the edge of the continental shelf. It extends from the tropics to the polar regions and from the sea surface to the abyssal depths.

7 0
4 years ago
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When a calcium atom forms an ion, it loses two electrons. What is the electrical charge of the calcium ion?. . A. -1 . B. -2 . C
9966 [12]
Since it has lost 2 electrons, hence the protons would be more by 2.

Charge:

<span> C. +2</span>
4 0
3 years ago
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