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Natalka [10]
3 years ago
8

Weathering most often takes place

Biology
2 answers:
AnnZ [28]3 years ago
7 0
I am mostly sure the answer is B. Good luck, and sorry if it's wrong! :(
shtirl [24]3 years ago
4 0
Its b or a mostly likely <span />
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What property do the following elements have in common? Sulfur, iodine, magnesium
Luba_88 [7]

Answer:

Same Phase at room temp

Explanation:

Here we have a metal and two nonmetals (sulfur and iodine).

They are all solid at room temperature. Metals form cations and are good conductors of electricity. They are not from the same family, therefore, they do not have the same number of valence electrons.

4 0
3 years ago
View the animation below, then complete the quiz to test your knowledge of the concept. conducting of the heart
valina [46]
1. In the heart, an action potential originates in the (E) sinoatrial node.
The cardiac action potential is a term referring to the change in the membrane potential of heart cells causing the heart to contract. Cardiac action potentials are created by a group of specialized cells capable of generating automatic action potentials and are located in the right atrium of the heart. These cells are called sinoatrial node and sometimes are referred to as the natural pacemaker of the heart. This characterization originates from the fact that sinoatrial node continuously provides action potential and sets the rhythm of the heart function.

2. The sequence of travel by an action potential through the heart is (A) sinoatrial node, atrioventricular node, atrioventricular bundle, bundle branches, Purkinje fibers.
As explained above, the cardiac action potential originates from the sinoatrial node. This action potential then travels through the atrioventricular node, which belongs to the electrical conduction system of the heart and is located between the atria and the ventricles. It is responsible for the electrical connection between the right atrium and the right ventricle. The action potential then travels to the atrioventricular bundle (or bundle of His), another part of the electrical conduction system of the heart. The atrioventricular bundle transmits the electrical impulses from the atrioventricular node to the bundle branches. The bundle branches then send the signal to the Purkinje fibers which send the electrical impulses to the ventricles, causing them to contract. 

3. The correct answer is A.
The generation of an action potential in the sinoatrial node causes the contraction of the atria. When the action potential passes from the sinoatrial node to the atrioventricular node, it slows down. This causes the transport of the electrical impulse from the atria to the ventricles to slow down. This delay enables the blood (from the contraction of the atria) to fill the ventricles before their contraction. 

4. This statement is true.
The interventricular septum is a structure which divides the two ventricles of the heart and it is composed of two branches, the left bundle and the right bundle branch. When the action potential reaches the interventricular septum, it then travels to the apex of the heart from where it travels upwards along the walls of the ventricles and the ventricular contraction begins.

5. This statement is true.  
The bundle branches gradually become Purkinje fibers located in the interior of the ventricular walls. Purkinje fibers are specialized cells and are responsible for conducting cardiac action potentials from the bundle branches to the ventricular walls. This signal transduction causes the muscle of the ventricular walls to contract. 
7 0
3 years ago
This is the role of a species in an ecosystem, consisting of such things as what it eats, when it eats, and where it lives.
Anika [276]

Answer:

Your answer would be a <u><em>NICHE</em></u>.

Explanation:

when an animal in an ecosystem consisting of such things as what it eats, when it eats, and where it lives would be called a <u><em>NICHE</em></u>.

3 0
2 years ago
Read 2 more answers
When using a light microscope, focus the specimen with the scanning objective lens first.
nasty-shy [4]

Answer :

goggle has the answer i got the same question as u

Explanation:

8 0
3 years ago
Read 2 more answers
Which statement describe what happens with ATP during glycolysis
Delvig [45]

The first stage of cellular respiration is glycolysis. It does not require oxygen. During glycolysis, one glucose molecule is split into two pyruvate molecules, using 2 ATP while producing 4 ATP and 2 NADH molecules.

5 0
3 years ago
Read 2 more answers
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