how does the rock cycle support the explanation that "matter is never created or destroyed?"

Answer:

The chemical elements that make up minerals and rocks are not destroyed. This fact illustrates the principle of conservation of matter. The changes that take place in the rock cycle never destroy or create matter. The elements are just redistributed in other forms.

Explanation:

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How do different climate zones respond to severe weather?
What challenges does each climate zone face?
How can that climate zone be best prepared for severe weather?
Which climate zone is the safest to live in? Why?

If a scientist conducts an experiment on plants and uses 1,000 plants in the control group and 1,000 plants in the test group, why is it still important that someone else be able to replicate the experiment and get similar results?
A. to help the experiment get published
B. to study the original methods and design new experiments
C. to confirm the original data and methods
D. to allow beginning scientists to practice designing experiments

What are the substances?

Which source of evidence for evolution is the weakest?

What is the answer to number 2??

Healthy human lungs look pink and spongy from the outside. The left lung is a little smaller than the right lung to make room for the heart. The lungs and heart are both protected by the rib cage. In the lungs, each main bronchus branches off into many smaller bronchi. The bronchi become smaller and smaller, and the smallest bronchi are called bronchioles. There are about 30,000 bronchioles in each lung, each about the same thickness as a strand of hair. The inhaled air eventually ends up in tiny air sacs called alveoli at the end of each bronchiole. There are about 300 million alveoli in each lung. They are covered with capillaries, tiny blood vessels that are only one cell thick. Oxygen travels from the alveoli through the capillaries to the bloodstream, heart and other cells.

Which of these best represents the progression of bronchi, bronchioles and alveoli in the lungs?

A
tree trunks that become smaller branches and twigs

B
a tight flower bud that has opened into a full bloom

C
whole apples that are sliced into separate wedges

D
a bridge that crosses two rivers

How are SA node cells similar to nerve cells?

Which image shows water being used in industry?

Grass being watered by a sprinkler.

Water spraying over machinery.

Water being used to wash dishes.

A: A bright, egg shaped form. B: Dust, gas, and stars in a nonuniform arrangement. C: Dust, gas, and stars in the shape of a pinwheel.
Use the drop-down menus to identify each type of galaxy pictured.
Galaxy A:
Galaxy B:
Galaxy C: