"Rub-a-dub-dub, three men in a tub" is a nursery rhyme that originated from the 14th century. The meaning of the rhyme is unclear and has been interpreted in various ways, with some suggesting it's simply a nonsensical rhyme, while others speculate it could refer to historical or biblical figures or have a deeper, hidden meaning.

The humoral coagulation system refers to the protein coagulation factor component.

Both have a high surface area for exchange: In the respiratory system the exchange of oxygen an carbon dioxide takes place between the alveoli and blood capillaries (both provide a high surface area for exchange) and in the digestive system, exchange of nutrients and waste takes place between the villi and blood capillaries (also both provide a high surface area for exchange)

In both systems, transported materials pass through the membranes by a process called diffusion.

The frog differ to a plant by the automotive transport system rather than is the public locomotive transport system.

The Respiratory System regulates breathing and gas exchanges within an organism. In humans, this system includes the lungs, airways, and respiratory muscles.

There are reasons why below:

1. because when they are running really fast and they stop and are very still and dont move and you touch it to see if it moves it moves quickly again.

2. there hairy.

3. there faces can sometimes be ugly like the wolf spider and the net casting spider which they both have two large eyes.

Those are some answers, I am a spider expert so keep asking questions and I will answer them

We need nutrients and oxygen to be supplied to our cells at a very fast rate as our cells need a lot of energy to keep us alive. Therefore we must have an efficient transport system to transport nutrients and oxygen to the billions of cells in our body. The transport system in man is known as the circulatory system.

All Cnidarians have nematocysts as a specialized organelle. Cnidarians use their nematocysts to capture prey and as a defense mechanism against predators.

All vertebrate animals (animals with spines) and a few invertebrates

("echinoderms" - starfish, sand dollars, sea urchins, and sea

cucumbers) have closed circulatory systems.

Humans give birth to live young, but fish are oviparous (egg-laying).

The circulatory system of mammals helps in the transfer of nutrients, oxygen, and other materials to the cells and removes the metabolic wastes. The circulatory system consist of three parts namely the blood, blood vessels, and the heart which is the pumping organ.

Fish have closed-loop circulatory systems.

Well.... The frog needs nutrients in order to survive. When the frog would eat its food, the food would go down through the digestive system, where obviously the food would break down. Then the circulatory system would take the broken down food and spread the nutrients that were taken from the food, all across the frogs body.

So the main answer is that a frogs digestive and circulatory system are important for its survival because the frog needs nutrient given to its body. The two systems work together to break down the food and spread the nutrients across the frogs body.

- This was the way I answered a question on my lab.

frog does not have ribs. It does not have rib cage also, so frogs cannot breathe by expanding the rib cage

An earthworm has a circulatory system consisting of four or more ventral blood vessels and one dorsal blood vessel that is also its heart. Most of the pumping of blood is performed by general muscular movements.

One difference is that sharks have a much shorter intestine because their food goes through a spiral valve that rotates it multiple times until it's fully digested.

Sea otters have a closed circulatory system.

In double circulation there is complete segregation of oxygenated and deoxygenated blood. Because of this the blood passes twice through the heart in one cycle of circulation hence the name double circulation. This is necessary for optimum oxygen utilization as humans are warm blooded animals and need extra energy to maintain their body temperature

Yes, all mammals (including squirrels) have digestive systems.

Well to start, the goldfish has two eyes, two nostrils, two gill covers, and a mouth. Then comes the two major parts- the head and abdomen. And lastly their are the fins: the pectorals, the pelvic fins, the caudle fin(s), the anal fins, and the dorsal fin.

Sushi restaurants sell raw fish as one of their main types of dishes so some people worry about food poisoning. This is unlikely though because the restaurant will maintain high standards of hygiene.

they are different because jellyfish are usually pink and us humans are either white black chocolate or pink haha, they are also different because they have the stingers, the only thing that stings from our body is when we have to take a crapuley and it doesnt want to come out (also known as being consitipation haha) they also have like 5 arms and we only have 2 except for the male the 3rd arm is just hidden in his pants :) those are all the differences between jellyfish and humans.. also we get more pleasure when we do it with our boyfriend or girlfriend and all the jellyfish feels is our feeling of constipation <- when they lay eggs, well if they lay eggs i don't know for sure !

Depends how big you want it. It might be worth getting hold of a red plastic inflatable ball, let some air out and push the edges in, then seal it up again. It might be too floppy though - just an idea...

The circulatory system distributes oxygen to body tissues as it works with the respiratory system. It also helps bring carbon dioxide back to the lungs so that it can be expelled.

Circulatory system