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jenyasd209 [6]
3 years ago
12

REDO!! Carbon dioxide is carried by blood to the lungs through _____. [FREE BRAINLIEST]

Biology
2 answers:
maks197457 [2]3 years ago
7 0

Answer: A. capillaries

Explanation:

andrey2020 [161]3 years ago
6 0

Answer:

A. capillaries

Explanation:

Capillaries are small, thin blood vessels that connect the arteries and the veins. Their thin walls allow oxygen, nutrients, carbon dioxide and waste products to pass to and from the tissue cells.

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If an element has 6 protons, 6 electrons, and 8 neurons, then what’s the atomic number
bazaltina [42]

Answer:

The atomic mass is the number of protons, plus the number of neutrons. In this case, 8 + 6 = 14.

Explanation:

The six protons (atomic number) tells me that this is carbon; the six electrons tell me that this is a carbon atom, rather than a carbon ion (an ion is when the number of electrons does not equal the number of protons, making the atom electrically non-neutral). The eight neutrons tell me that this is an isotope (in other words, a version) of carbon called carbon-14, which happens to be mildly radioactive; and therefore useful to archaeologists in dating human artifacts.

8 0
3 years ago
Explain how diffusion allows the small intestine
Black_prince [1.1K]

Answer:

because smaller is better i would knoow

Explanation:

6 0
2 years ago
Using the words "selection pressure" and "fitness", explain how natural selection causes populations to change over time.
Mars2501 [29]

Answer:

Environment and competition is the leading cause of evolution. It's an instinct to want to live, but trying to survive is difficult when other animals have the same goal. An ecosystem is a cycle, but every generation of this ecosystem slightly changes, and so do the animals. Every bug that has fitness can start overpopulating the ecosystem, leading to a surge of resources for what preys on the bug. Now bird's population goes up, so do other animal populations. Or the bug becomes an invasive species, and birds are being hunted too often to decrease the population.

In a different scenario, bugs are evolving because of the selection pressure that the environment is giving them. The birds have become better over the generation, and now have a more suited beak to catch the bug off the ground. The bug population maybe be decreasing, but the ones who live through the crisis are populating with bugs that certain gene that helped them out. But it's not over, the bug population isn't declining but it wasn't as big as it was before. The bird will find more ways to find and capture the bugs. But then bugs will keep surviving through the selection pressure and become much harder to find since they figured out camouflage. The bug that was neon yellow was dying since they were easy to see. Now they can range from green to black to hide in the environment. Now the birds are facing the selection pressure, it's a cycle.

(look, im not good at gammar, so you should get this looked at before entering it. I put it through gammarly if that helps.

8 0
3 years ago
Corals are animals whose bodies consist of a single layer of cells
Eddi Din [679]

Answer and Explanation:

Corals are a type of invertebrate within the <u>phylum Cnidaria</u>. They live in colonies of many identical individual polyps.A set of tentacles surround a central mouth opening. They also have a simple, radially-symmetrical body containing a single opening that serves as both the mouth and anus. The body is made up of two layers of cells, separated by a jelly-like layer with no internal organ. The two layers of cells make a single cell surrounding the body.

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3 years ago
How many calories are in a large papa john pepperoni pizza?
dezoksy [38]
In a large Papa Johns pepperoni pizza there are 325 calories
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