3. When oxygen in a person's blood decreases, the body will respond by...
increasing hunger
decreasing breathing rate
decreasing blood pressure
increasing breathing rate

Answer:

Cnidaria

Explanation:

Answer:

In the closed circulatory system, blood is confined to a heart and blood vessels, whereas in an open system, hemolymph (blood) moves from a heart through vessels into interconnected spaces called a "hemocoel."

Explanation:

An open circulation the blood is not blood vessels, it instead is pumped into a cavity called Hemocoel.

A closed circulatory system, the blood is pumped through vessels SEPARATE from the interstitial fluid of the body.

Answer:

Organisms 1 and 2

Explanation:

Answer:

it will turn to ice

Explanation:

the potential energy in the molecules is reduced and they start to move alot slower, eventually they stick together and form ice

Answer:

by blocking cells in mitosis and staining the condensed chromosomes Giemsa dye.

Explanation:

Can't explain.

Explanation:

Summary. Chemical properties are properties that can be measured or observed only when matter undergoes a change to become an entirely different kind of matter. They include reactivity, flammability, and the ability to rust.

Answer: Ability to burn and ability to rust

Explanation:

Answer:

a and c

Explanation:

I do not really have an explanation but I hope this helps :)

Answer:

a and c

Explanation:

brain has to do with your nervous system and your heart has to do with your circulatory

Answer:

Explanation:

The tortoise took 5 minutes to go 30 feet; how slow is the turtle?

= 30/5

= 6 feet/minutes

I think it's b because it seems obvious

Answer:

1. Isovolumetric contraction.

2. Ventricular filling.

3. Isovolumetric relaxation.

4. Ventricular ejection.

Explanation:

In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.

Generally, the cardiac cycle occurs in two (2) stages;

Diastole : in this stage, the ventricles is relaxed and would be filled with blood.

Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.

The following terms describe the electrical events with the correct phases of the cardiac cycle in mammals (human beings);

1. Isovolumetric contraction: The ventricular muscle cells depolarize at the start of this phase. During this phase, the pressure in the atria is lower than the pressure in the ventricles while the pressure in the arteries is higher than the pressure in the ventricles.

2. Ventricular filling: During this phase, Na+ entry through the funny channels causes the pacemaker potential of SA nodal cells to gradually become less negative until it reaches threshold. It causes the atria to contract at the end of the phase.

3. Isovolumetric relaxation: The ventricular muscle cells repolarize right before this phase. During this phase, all of the four (4) cardiac valves are closed while all of the four (4) chambers are relaxed.

4. Ventricular ejection: The cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. Also, the atrioventricular (AV) valves are closed while the semilunar valves are open.

Answer:

J

Explanation:

The musculoskeletal system is what enables movement.

The brain signals the body of an animal to move by transmitting electrical impulses through the neurons, and the animal is then able to walk or run because the muscles of the muscular system work with the bones of the skeletal system that is present in option J.

The neuron stimulates the muscle for the movement because the muscle has receptors for the neurotransmitters, such as at the neuromuscular junction, and the neurotransmitters either stimulate or repress the function, depending on the type of neurotransmitter.

Hence, the brain signals the body of an animal to move by transmitting electrical impulses through the neurons, and the animal is then able to walk or run because the muscles of the muscular system work with the bones of the skeletal system that is present in option J.

Learn more about neuron function in muscle activity here.

https://brainly.com/question/28273549

#SPJ2

Answer:

CGC

Explanation:

The pairs go

AT

GC

therefore if it's G then it's C

Answer:

D. Perimineralization

Explanation:

After a bone, wood fragment, or shell is buried in sediment, it may be exposed to mineral-rich water that moves through the sediment. This water will deposit minerals, typically silica, into empty spaces, producing a fossil.

Answer:

c) Breccia

HOPE IT HELPS!!

Answer:

Language barriers,Employment opportunities

Housing,Access to local services,Transportation issues,Cultural differences,Raising children,Prejudice,Isolation,The weather

Answer: some of the challenges immigrants face in America are land and job, shortages, Cultural differences, Raising children. and many people come to the US. seeking freedom or relief.

Explanation:

hope this helps have a great day

Shadows are evidence of light travelling in straight lines. An object blocks light so that it can't reach the surface where we see the shadow. Light fills up all of the space before it hits the object, but the whole region between the object and the surface is in shadow.

Explanation:

Since the wavelength of light is very small as compared with the size of ordinary object and diffraction of light is not easily noticed and hence the light appears to travel in a straight line.

I hope this was ur answer and I hope this might help u

Answer:

Particles are  tightly packed, but are  far enough apart to  slide over one  1 another- Liquid

Occurs due to heating or  cooling of a substance (adding or  * removing energy)- Change of State of Matter

have an  indefinite shape  and an indefinite  volume- Gas

Particles  tightly packed, vibrating  about a fixed position- Solid

Explanation:

Answer:

Genotypes:

BB, Bb, bb

Phenotypes:

Brown eyes, hazel eyes

Explanation:

Punnet squares are in the image attached

Answer:

glucose is broken down in ten steps to two molecules of pyruvate which then enters the mitochondria where it is oxidized through the tricaboxylic acid cycle to carbon dioxide and water

True

Sorry if im wrong

have a nice day.

The digestive system stores and digests foods, transfers nutrients to the body, eliminates waste and absorbs water.

Answer:

Is this a true or false question?

Explanation:

Answer:

The goal of transcription is to make a RNA copy of a gene's DNA sequence. For a protein-coding gene, the RNA copy, or transcript, carries the information needed to build a polypeptide (protein or protein subunit). Eukaryotic transcripts need to go through some processing steps before translation into proteins.

Explanation: