what role did cyanobacteria play in the formation of early earth?

Answer:

A.carbon dioxide

Explanation:

oxygen poor blood means the blood is rich with Carbon dioxide

The oxygen poor blood delivers to the lungs carbon dioxide out of the body organs and cells. Thus, the correct option is A.

The heart is divided into two separate pumping systems, which include the right side and the left side. The right side of the heart receives oxygen-poor blood that is deoxygenated blood from the veins and pumps it to the lungs, where the blood picks up oxygen gas from the alveoli and gets rid of carbon dioxide gas.

Deoxygenated blood has less oxygen or it is oxygen-poor and contains is carbon dioxide rich. The right heart pumps this deoxygenated blood to the lungs where it picks up additional oxygen gas.

As the blood travels through body, oxygen gas is used up, and the blood becomes oxygen poor or carbon dioxide rich. Oxygen-poor blood returns from the body to the heart by the superior vena cava and the inferior vena cava, the two main veins which bring blood back to the heart.

Therefore, the correct option is A.

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Answer:

Explanation:

Any change in the climate of an area can affect the plants and animals living there, as well as the makeup of the entire ecosystem. Some species are already responding to a warmer climate by moving to cooler locations. ... Climate change also alters the life cycles of plants and animals

Answer:

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Please see the attached picture for full solution!:)

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Animal communication systems may have evolved in different ways, depending on the precise selective pressures operating on them. An honest signal is one conclusion that can be made, but it is not the only one.

John Maynard Smith and David Harper suggested the hypothetical chase-away selection model of communication development in 2003. In this hypothesis, the preferences of picky females cause a signal that initially evolved to communicate honest information (such as the quality of a male's territory or his capacity to provide resources) to become exaggerated over time.

Therefore, the given statement is False.

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Answer:

Phalanges: long bones

Sternum: flat bone

Vertebrae: Irregular bone

Answer:

The St Lucie canal serves as an outlet of drainage for the Okeechobee Lake through the St Lucie River and out to the Atlantic Ocean.

Explanation:

The St. Lucie River is an estuary in Florida, in the United States. It was basically a freshwater system before an inlet was dug to provide access directly to the Atlantic Ocean.

Lake Okeechobee is the second largest freshwater lake in the United States. Water flows into the lake from various sources with Kissimmee River being the major source.

Because of the high levels of water in Lake Okeechobee, the St. Lucie canal was constructed in the 1920s. The St. Lucie canal provides a good outlet from the Okeechobee lake, through the St. Lucie River and out to the Atlantic Ocean.

Answer:

D

Explanation:

Carbon is expelled not used for producing sugars or any of that

Answer:

I used to live in an island, it was made out of limestone and volcanic rock

Explanation:

began to form with undersea volcanic eruptions in the Eocene

-Marianas Trench

-cliffs, cave, peninsula, grotto

After gram staining, the cell will appear pink or red. As peptidoglycan cell walls degrade in older cultures, gram-positive cells are more likely to become gram-negative or gram variable. Cell walls start to deteriorate, which makes the crystal violet leave the cell.

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On the highway, changing lanes without signalling is not a driver safety technique.

Always use your turn signal when turning your car to the right and left. If you are travelling more quickly than the traffic situation on a highway, you must stay inside the right lane. If you miss the exit, keep driving to next exit because it is forbidden to turn around or reverse up on interstates. Be sure to buckle up, be on the lookout for reckless drivers, keep you hands on the steering, & utilise your mirrors to keep an eye on your surroundings. Defensive driving's primary goal is accident prevention, and the easiest method to be safe while driving is to minimise distractions.

(Which of the following is not a safe driving practice when driving on the interstate?

-Slower traffic must keep to the right.

-Change lanes without signaling.

-If you miss your exit, you must go to the next exit.)

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Answer:

Transport proteins (carrier proteins and channel proteins) allow substances into and out of the cell that cannot pass through the phospholipid bilayer (as they’re either to large, charged or not lipid soluble) by facilitated diffusion.

Specifically channel proteins allow ions into and out of the cell by creating a pore in the membrane in which they can move through with their concentration gradient

Explanation:

Yes, it is possible for an individual to have symptoms and behaviors characteristic of both anorexia nervosa and bulimia nervosa at the same time. This is referred to as "anorexia bulimia" or "bulimarexia."

Anorexia nervosa is an eating disorder characterized by an intense fear of gaining weight and a distorted body image, leading to severe food restriction and significant weight loss. Bulimia nervosa, on the other hand, involves recurrent episodes of binge eating followed by compensatory behaviors such as self-induced vomiting, excessive exercise, or the misuse of laxatives or diuretics to prevent weight gain.

In cases of anorexia bulimia, individuals may exhibit restrictive eating patterns, severe food limitation, excessive exercise, and an intense fear of weight gain associated with anorexia nervosa. At the same time, they may also engage in episodes of binge eating followed by purging behaviors similar to those seen in bulimia nervosa. These individuals may cycle between the restrictive behaviors of anorexia and the binge-eating and purging behaviors of bulimia.

It's important to note that anorexia bulimia is not an official diagnostic category recognized by the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). However, individuals can exhibit symptoms of both disorders concurrently, and it is crucial for those experiencing these symptoms to seek professional help for proper assessment and treatment.

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answer

Homologous structures are present in many different species that share a common ancestor. the structure are anatomically similar and persist in the different species.

This is evident of divergent evolution because it shows that different animals come from a common ancestor but evolve o become different species from each other.

The carbon is taken from the air and is used in photosynthesis to produce glucose (from carbon dioxide and water reacting with the sunlight). This carbon enter the leaves through the stoma and is incorporated into organic compounds within the plant structure (being stored there).

Therefore, the correct answer is b. plant structures.

Answer:

c and d

Explanation:

because they are cold blooded n have no back bone

The characteristics that mainly apply to invertebrates are as follows:

Thus, the correct options are A, C, and D.

Invertebrates may be defined as those forms of living organisms that lack a backbone, spinal cord, and central nervous system.

Invertebrates generally have bilateral or radial symmetry. They can be asymmetrical as well. They only have either incomplete or complete digestive systems. Invertebrates completely lack a skeletal system.

Therefore, the correct options for this question are A, C, and D.

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During glycolysis, there is no net change in the redox state of the glucose carbons.

Glycolysis is the metabolic pathway that converts glucose into pyruvate through a series of enzymatic reactions. It occurs in the cytoplasm of cells and serves as the initial step in both aerobic and anaerobic cellular respiration.

In terms of redox reactions, glycolysis involves both oxidation and reduction reactions. However, when considering the overall net change in the redox state of the glucose carbons, there is no change. This means that the glucose carbons neither gain nor lose electrons during glycolysis.

During the process of glycolysis, glucose is broken down into two molecules of pyruvate. Along the pathway, there are several redox reactions involving the transfer of electrons to carrier molecules such as NAD+ (nicotinamide adenine dinucleotide) and the subsequent production of NADH.

These redox reactions involve the oxidation of some molecules and the reduction of others. However, when considering the glucose carbons as a whole, the net change in their redox state is zero.

Overall, glycolysis is primarily a pathway for energy production, and while there are redox reactions occurring, the net change in the redox state of the glucose carbons is neutral.

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Answer:

The nitrogen cycle is very important for living organisms and is biologically usable by them. Very essential for the elaboration of DNA, amino acids, proteins and nucleic acids and fundamental for the development or productivity of agriculture.

Explanation:

Answer:

20.5%

Explanation:

Hope this helps!!

Answer:  the chemical reaction creates a gas called carbon dioxide

Answer:

Rotation or Revolution

Explanation:

Answer:

Earth spins around it's axis is one type of movement.

Answer:

There would be no production of high energy sugars in the plant.

Explanation:

Plants produce their food (autotrophism) in a process unique to them called PHOTOSYNTHESIS. Photosynthesis is the process whereby plants produce energy-storing sugars (glucose) in the presence of light from sun.

This photosynthetic process combines Carbon dioxide (CO2) and water (H2O) as reactants to form sugar (C6H12O6) and oxygen (O2) as products. The equation for photosynthesis is as follows:

6CO2 + 6H2O → C6H12O6 + 6O2

This means that water and carbon dioxide are strictly needed for the process of photosynthesis to occur in plants. Hence, if water or carbon dioxide were not available to plants, there would be no photosynthetic process and ultimately no production of high energy sugars.

After 5,100 years ago, the standardized impressions placed on clay tokens in ancient Mesopotamia became: (D) the world's first writing system.

Clay tokens were recovered by the Archaeologists while digging in Mesopotamia. They were dated to b as old as  7500 BCE. There actual use remains unknown but it was hypothesized that they must have been used as denominations in exchange of goods.

Mesopotamia is a region in the Western Asia with historical significance. The modern Iraq is currently in Mesopotamia. The importance of Mesopotamia lie in the fact that agriculture was first discovered there. It was a well established civilization with villages, domesticated animals, etc.

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The cleanest in a school is the sinks. Or the bottles of Hand Sanitizer.

Answer:

The structure of a fern. Ferns have 3 major parts – the rhizome, the fronds and the reproductive structures called sporangia. ... An erect rhizome, which is a solid mass that gives rise to a tuft of fronds. You can see this type of rhizome on a king fern or a crown fern.

Explanation:

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This new protein is functionally related to the ECM protein and likely binds to receptors called integrins.

Integrins are heterodimeric transmembrane glycoprotein receptors attached to the extracellular matrix formed by α and β subunits.

Integrins are critical in several physiological and pathological processes including cell differentiation and proliferation in wound healing, cell-cell adhesion, attachment, and signal transduction between cells and the extracellular matrix.

Integrins are expressed by a variety of cell types including epithelial cells, fibroblasts, osteocytes, endothelial cells, leukocytes, and platelets. Human epithelial cells express 7 different types of integrins α2β1, α3β1, α5β1, α9β1, α6β4, αvβ1, αvβ1, αvβ1.

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The offspring of mice from the first and second populations will exhibit genetic traits from both parental populations due to interbreeding.

When the mice from the first population reproduce with members of the second population after being brought together by flooding, the offspring can be expected to exhibit increased genetic diversity compared to the parental populations. This is because the mice from the two populations have different genetic backgrounds due to their previous isolation.

The introduction of new genetic material through interbreeding will lead to a mixing of genetic traits and potentially create novel combinations in the offspring. This increased genetic diversity can provide advantages in terms of adaptability and survival in changing environments.

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Answer:

Heat Index Forecast

Explanation:

Answer: heat stress forecast

Explanation:

First of all go vegetarian, don’t eat precious cows. Second of all it’s heat stress forecast that’s what comes up when you search it ( meat industry- ew)

Answer:

The collisions release heat, which results in the heating and subsequent melting, sinking, and rising of materials.

Explanation:

The collisions literally release heat (kinetic energy). Energy from collision increased temperature, causing materials to melt.

The statement which best explains how the collisions of materials in space contribute to the formation of layers in protoplanets is: B. The collisions release heat, which results in the heating and subsequent melting, sinking, and rising of materials.

Accretion can be defined as the accumulation of coastal sediment, sand or land mass on a tectonic plate at a subduction zone over time.

Protoplanets refers to a large collection of matter within a giant cloud of gas and dust in orbit around the sun and developing into a planet.

Hence, a protoplanet is a large planetary embryo in its early stages of evolution through accretion.

Basically, the collisions of coastal sediment, sand or land mass in space contribute to the formation of multiple layers in protoplanets through a process called accretion.

Heat is typically generated through the collisions of materials in space and it subsequently melts, sinks and causes the materials to rise, which forms multiple layers in protoplanets.

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