Why are marsupials only found in Australia?

Answer:

There are no gram-positive archaea because archaea lack peptidoglycan in their cell walls, meaning that the archaic cell walls are more similar to gram-negative bacterial walls, although they do show a greater variety of cell wall types. And bacteria do have this.

Answer:

A hypothesis is a tentative, testable answer to a scientific question. Once a scientist has a scientific question she is interested in, the scientist reads up to find out what is already known on the topic. ... A hypothesis leads to one or more predictions that can be tested by experimenting

Explanation:

my friend moved to neverland and now im sad

:(

Fun fact

Bananas

Answer:

D

Explanation:

Your first order of business should always be to see which answers involve both of the systems. A has the circulatory system (blood) but no respiratory system (intestines are the gastrointestinal system), B has the respiratory system (the lungs) but no circulatory system, C has the circulatory system (new red blood cells) but not the respiratory system (bones are the skeleton), and that just leaves D, so it has to be the answer. When you look at it to check, it includes both systems, as the lungs are part of the respiratory system and the blood is part of the circulatory system.

Answer:

The answer is The Prey

Explanation:

Took a quiz

Answer:

prey

Explanation:

Answer:

true

Explanation:

Answer:

C, the Coccyx

Explanation:

Answer:

share a common ancestor

Explanation:

The similarity in their embryos and embryonic development suggests that reptiles, birds, and mammals share the same ancestor.

Similarity in the structure and development of embryo is one of the evidences that is been used by scientists to support the theory of evolution of species. According to the theory of organic evolution, all organisms are on earth as a result of descent with modifications from common ancestors.

Reptiles, birds, and mammals are all vertebrates. They share some basic characteristics and are thought to have shared a common ancestor before each group took different adaptive channels leading to their  differences as they currently exist.

Answer:

it can change weather things will live or die

Ecological succession occurs when changes to either abiotic or biotic factors have an impact on an entire ecosystem. The replacement of one community of creatures, such as a plant or animal, by another is known as ecological succession. A forest fire is one illustration.

An ecosystem's overall health is also influenced by biotic factors such as the diversity of consumers and the presence of autotrophs, or self-sustaining organisms like plants.

Abiotic variables have an impact on an organism's capacity for survival and reproduction. Populations are constrained in their expansion by abiotic forces. In an ecosystem, how these elements interact is crucial.

Therefore, it can change weather things will live or die.

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Answer:

codominant inheritance

Explanation:

edge

Answer:The reefs create a shelter for organisms and food

Explanation:Therefore it now created a more populated area for more animals or organisms to live.

Answer:

Plato

Explanation:

Many animals depend on corals for food and protection. By restoring the reefs using this method, they may be able to protect other populations of organisms from declining as well.

Answer: false

Explanation:

Answer:

Explanation:

What are the body's levels of organization from least complex to most complex?

Answer:

I think there is life beyond earth. Actually there most definently is. I think in  a way it could be limiting. It's the fcat that the ones out there may not even be able to receive the message as fast as we please. Who knows, it could be years, decades, maybe centuries before they make actual contact with us. Then again, maybe they already have. But, the way this could affect the study is the fact that (I doubt it) but maybe a message could be sent the wrong way, or they misinterpret it. That's the only think I can get off. Anyway, this can also depend on how much funding is going into space. This also brings up the question, "How much do we know about our own planet?

Answer:

The third line of defense is referred to as the immune response. This defense is specific to a particular pathogen, and it allows the immune system to “remember” the pathogen after the infection is over.

Explanation: in my best description, btw if its good make me brainliest?, if it didnt help im sry i tried my best

Answer:

B r e a t h i n g

EXPLAINATION????:

A process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances.

Answer:

Another word for taking a breath.

Explanation:

Answer:

D.

an account of somebody's life written or produced by another person

Answer:

overpopulation can occur when there are not enough preadators or the food web is out of balance, in some ecosystems overpopulation can really harm it as some organisms increase and decrease which can cause an extintion if it gets too out of hand.

Explanation: period.

Hope this helps

Answer:

D

Explanation:

Answer:

D

Explanation:

Sperm Cells And Urine

Answer:

it changes just as the weather changes

Explanation:

so as it gets colder the fish get colder as well meaning that the fish will expect its habitat to turn warmer just as we humans (some of us aliens jkjk) want warmth when we are cold its the same thing with fishes

Answer:

In a hot spring in Kamchatka, Russia, the two groups of genetically indistinguishable microbes parted ways. They began evolving into different species—despite the fact that they still encountered one another in their acidic, boiling habitat and even exchanged some genes from time to time, researchers report.

Hope this helps

Explanation:

An ecological pyramid (also trophic pyramid, Eltonian pyramid, energy pyramid, or sometimes food pyramid) is a graphical representation designed to show the biomass or bioproductivity at each trophic level in a given ecosystem.

Answer:

Inversion, because it's switched to the opposite order. d e f becomes f e d

Explanation:

technically its not even a question but idk. whats up?

Answer:

D. Food webs contain many different linked food chains​

Explanation:

Answer:

Explanation:

Here is the summary;

In 1817 his father collected later, in1828 Alexandre Brongniart's son (Scientists) collected fossils that showed species changing over time.

Between 1831–36 Darwin collected specimens from around the world during the HMS Beagle voyage

In 1859 Darwin proposed the theory of evolution by natural selection

Between (1856-1863), published in 1865 Mendel proposed laws for how traits are inherited.

Scientists examined evolutionary relationships using DNA sequencing.

Answer:

hypothalamus

Explanation:

Answer:

Hypothalumus - Part of the brain that helps to regulate the endocrine system

Thymus-  Helps children develop a strong immune system

Pituitary- Regulates growth, water balance, and blood pressure

Thyroid- Regulates metabolism

Explanation:

I got it right

Answer:

D) groundwater comes to the surface and floods the land

Explanation:

Groundwater like water from river or lake comes to a land and before it has a chance to go back into the soil or evaporate, more water comes and floods the areas, thus the previous water stays and new water stays as well. If this cycle is repeated, a wetland will form.

wetlands form The tributaries flow into rivers.

Wetlands is a flat area of ​​abundant herbaceous and/or shrubby vegetation that remains flooded most of the time. Swamps generally appear in areas where water flow is slow. In this way, the organic mass present in the waters decomposes on the spot.

With this information, we can conclude that wetlands are formed. The tributaries flow into rivers.

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