Which of the following must be true in a dry limestone cave? Select all that apply. A. Water once entered the cave. B. The cave was formed by volcanic means. C. Any cave formations are no longer growing. D. There must only be stalagmites, no stalactites.

Answers

Answer 1

Option b is correct..

Caves are formed by the dissolution of limestone. Rainwater picks up carbon dioxide from the air and as it percolates through the soil, which turns into a weak acid. This slowly dissolves out the limestone along the joints, bedding planes and fractures, some of which become enlarged enough to form caves.

Related Questions

Choose all the answers that apply.

Our solar system:

is in the Milky Way galaxy
is the only solar system in the universe
does not include Pluto
includes comets and asteroids
is the only known system that supports life

Answers

Our solar system:

is in the Milky Way galaxy

includes comets and asteroids

is the only known system that supports life

The Sun, our star, and everything gravitationally connected to it, including the planets Mercury.

What is Solar system?

The solar system is comprised of the sun, the four inner planets, the asteroid belt, the four gas giants, the disk-shaped Kuiper Belt, and the heliopause, which is located far from the solar system's edge.

The solar system's outermost point is thought to be 9 billion miles (15 billion kilometers) from the sun.

We have found thousands of planetary systems orbiting other stars in the Milky Way in addition to our own solar system.

Therefore, The Sun, our star, and everything gravitationally connected to it, including the planets Mercury.

To learn more about Milky way, refer to the link:

https://brainly.com/question/2806083

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Scientific explanations are accepted when

Answers

ANSWER:

Scientific explanations are accepted when there is sufficient evidence to prove them right. In addition, scientific explanations must be logical to be acceptable and must match as much evidences as possible.

EXPLANATION:

Scientific explanations explain something about the natural world by making use of observations and measurements. These are usually tentative proposals that need to be verified or proved to be true. The observations and measurements must prove the scientific explanation to be true or must support it so that it becomes acceptable.

Answer:

They are consistent with experimental evidence. They are consistent with observational evidence. They lead to accurate predictions.

Explanation:

18. Approximately when did the first plants and arthropods appear on land?
O A. 416 Ma
O B.299 Ma
O C. 444 Ma
O D. 488 Ma

Answers

Answer:

C. 444 Ma

Explanation:

The first plants that managed to colonize the land appeared around 470 million years ago, while the first arthropods on land appear i the fossil records around 450 million years ago, so we can say that around the period of 444 million years ago they were well established on land. The first arthropods that started to have terrestrial life were almost identical to those in water, with only minor changes that enabled them to breathe and move more easily. The first plants on land were non-vascular plants. They were small as they initially didn't had deep and well established roots.

Answer:

Explanation:

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