2. What is the evidence that 4- legged animals came from fish?

Answer:

ATP and NADPH produced by the light reactions are used in the Calvin cycle to reduce carbon dioxide to sugar. ATP is the energy source, while NADPH is the reducing agent that adds high-energy electrons to form sugar.

Answer:

It then describes the basic physical elements of the system as it exists today, together with the biophysical geography of the Catskill/Delaware headwaters from which 90 percent of the City's water is derived. This chapter

Answer:

its b

Explanation:

I hope this help

Mmm

Answer:

Nerve Cells

Explanation:

Answer: A sugar-phosphate backbone (alternating grey-dark grey) joins together nucleotides in a DNA sequence. The sugar-phosphate backbone forms the structural framework of nucleic acids, including DNA and RNA. This backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

Explanation:

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Explantion hehehehehehheheheh

Answer:

sunlight obsorbed

water is split

glucose formed

glucose used

oxygen released

Explanation:

Answer:

Both are living organisms.

Both reproduce.

Both undergo growth and development.

Both react to changes to the environment.

Both excrete.

Explanation:

Answer:15% cytosine

Explanation:We know that the sample is 35% adenine, which tells us that it is also 35% thymine. We know that cytosine and guanine pair together and will be present in equal amounts, so we can divide this final total by 2 to find our answer. The sample is 35% adenine, 35% thymine, 15% guanine, and 15% cytosine.

Answer:

The correct answer is - non-renewable.

Explanation:

The non-renewable source of energy is the source of energy that can not be replaced naturally in the manner and the pace of the consumption of these sources. Nuclear, oil, fossil fuels, natural gases and other are an example of these type of energy source.

Fossil fuels were generated due to the decomposition of the dead plants and animals within the Earth over millions of years therefore these are called fossil fuels. These fuels are cause pollution by burning.

Answer:

d. selective breeding

Explanation:

Answer: It's B because there is more force pulling to the left.

Hope it helps. Brainliest?

Answer:

When neurons communicate, an electric impulse triggers the realease of neurotransmitters from the axon into the synapse. The neurotransmitters cross the synapse and bind to special molecules on the other side ,called receptors. Receptors are located on the dendrites. Receptors receive And process the messages

Answer:

Explanation:

An organism refers to a single individual living in an ecosystem and population refers to a group of organisms living together in the same area.

Answer: A population in an ecosystem is the amount of species living in that ecosystem, while an organism is a single living entity.

Answer:

Explanation:

True cause pesticide can end up killing other bugs you don't wanna kill like bees

Answer:

Hypocenter or epicenter

(two different things)

Explanation:

The hypocenter is the point within the earth where an earthquake rupture starts.

The epicenter is the point directly above the hypocenter and is on the surface of the Earth.

Answer: Option 1: Heat water and record it's change in temperature with time

Explanation:

Thermal Energy = Heat

Answer:

A Muscle Contraction Is Triggered When an Action Potential Travels Along the Nerves to the Muscles.Muscle contraction begins when the nervous system generates a signal. The signal, an impulse called an action potential, travels through a type of nerve cell called a motor neuron. The neuromuscular junction is the name of the place where the motor neuron reaches a muscle cell. Skeletal muscle tissue is composed of cells called muscle fibers. When the nervous system signal reaches the neuromuscular junction a chemical message is released by the motor neuron. The chemical message, a neurotransmitter called acetylcholine, binds to receptors on the outside of the muscle fiber. That starts a chemical reaction within the muscle.Acetylcholine Is Released and Binds to Receptors on the Muscle Membrane.

A multistep molecular process within the muscle fiber begins when acetylcholine binds to receptors on the muscle fiber membrane. The proteins inside muscle fibers are organized into long chains that can interact with each other, reorganizing to shorten and relax. When acetylcholine reaches receptors on the membranes of muscle fibers, membrane channels open and the process that contracts a relaxed muscle fibers begins:

Open channels allow an influx of sodium ions into the cytoplasm of the muscle fiber.

The sodium influx also sends a message within the muscle fiber to trigger the release of stored calcium ions.

The calcium ions diffuse into the muscle fiber.

The relationship between the chains of proteins within the muscle cells changes, leading to the contraction.

Explanation:

Sry I don’t know how to explain It’s a lot.

Answer: I’m not sure what you’ve learned but for me it’s that you shouldnt leave the lights on when you don’t need them, you should switch off the TV when you aren’t using it, if you see a piece of trash pick it up and throw it in a trash can, and recycle

Explanation: HAPPY (late) EARTH DAY!!

Answer:

1)Invertebrates are known as creatures that do not have backbones. Even though these creatures do not have backbones, they have been uniquely designed in order to survive. According to studies, most of these creatures are found in the sea and one of them is the Star Fish or also called as the Sea Star. Starfish's functions and ability to survive is not the same like other animals which make them unique in a different way. The starfish's body is hard and bony for protection purposes and they exist in a variety of colors for camouflage. Their essential functions in order to survive are as follows:

-The Ability to Regenerate: Starfishes have the ability to grow damaged and lost limbs or even their entire body as long as the center part is still present and intact. And this is their way of reproduction as well.

-Having Tube Feet: Its arms are covered with a suction-like tiny cups of tube feet. This unique design of the starfishes enables them to move and secure themselves, especially on rocks and ocean floors.

-Unique Feeding Ability: Sea Stars don't have mouths nor teeth to ingest food. Rather, these creatures have the ability to push open or turn their stomachs out and digest its food. After digestion, their stomachs retract back to their bodies.  

-Vascular System: How starfishes survive does not rely on having hearts, brains and blood. Rather, they use the seawater. The seawater serves as the one the circulates inside the sea stars' bodies and this is when nutrients and oxygen are being transported and absorbed.

2)Keep in mind invertebrates are those who have exoskeletons (outside skeleton) or are hydrostatic (no skeleton). This make up 95% of all animals for example an ant or sponge. For a sponge, all it has is tissues that enable it to allow water to flow out the tops.  

Chordata are anything with vertebrates so a simple fish could suffice. THEY HAVE 4 SPECIFIC CHARACTERISTICS: 1.Notochord 2.Dorsal, hollow nerve cord 3.Pharyngeal slits 4.Muscual, an.al tail  

This is us, we have thumbs, and vertebrates.

3)The bipedalism of primates puts their heads on a higher elevation and this allows them to see predators or prey from afar hence giving them advantage. Opposable thumbs on the hand and feet allow primates to grasp and handle objects effectively hence are able to make use of tools for hunting and etcetera

Explanation:

Answer:

I think is C

Explanation:

Answer:

china world was large puplation of ther country and dencity was multiple

Answer:

Density-dependent factors include disease, competition, and predation. Density-dependant factors can have either a positive or a negative correlation to population size. With a positive relationship, these limiting factors increase with the size of the population and limit growth as population size increases.

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What is a cell? Why is it called the basic unit of life?

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Cells are the basic unit of life, all living organisms are made up of cells, which means cells make up humans, plants and animals. Nonliving things on the other hand are composed of chemical elements and compounds.

Note: My answer is based on my understanding of your question.

Hopefully Help:)

Answer:

B) Asexual reproduction involves one parent, and sexual reproduction involves two parents.

Explanation:

In asexual reproduction, offspring formed from only one parent whereas, in sexual reproduction, offspring produces from two parents. The offspring is identical to the parent in asexual reproduction while on the other hand, offspring is different from their parents. Sexual reproduction increases the chances of survival of the species due to genetic diversity whereas asexual reproduction has limited chances of survival due to lack of genetic diversity.

Asexual reproduction involves the production of offspring without the involvement of gametes, resulting in genetically identical offspring. On the other hand, sexual reproduction involves the fusion of gametes from two parents, resulting in offspring with genetic variation.

Asexual reproduction and sexual reproduction are two different methods of producing offspring in living organisms. Here are the differences between them:

1. Asexual reproduction:
Asexual reproduction involves the production of offspring from a single parent without the involvement of gametes (sex cells). This means that the offspring are genetically identical or clones of the parent.

Examples of asexual reproduction include binary fission in bacteria, budding in yeast, and regeneration in starfish. In binary fission, a single-celled organism divides into two identical cells. In budding, a small bud grows on the parent organism and eventually detaches to become a new individual. In regeneration, an organism can regrow a lost body part and develop into a complete organism.

2. Sexual reproduction:
Sexual reproduction involves the fusion of gametes from two parents to produce offspring. Gametes are specialized sex cells, such as sperm and eggs, which contain half of the genetic material of the parent.

In sexual reproduction, the offspring inherit genetic information from both parents, leading to genetic variation. This genetic diversity is important for the survival and adaptation of species over time.

Examples of sexual reproduction include humans, animals, and many plants. In humans, sperm from the male parent fertilizes an egg from the female parent, resulting in the formation of a zygote. The zygote then undergoes development to form a new individual with a unique combination of genetic traits.

To know more about Asexual reproduction:

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Answer:

PLANTS are 'PRODUCERS' of energy. They use SUNLIGHT + water, minerals and carbon dioxide to make energy. ... To get energy animals need to eat. They get their energy INDIRECTLY from the from the sun by eating other organisms.

Answer:

multiple different layers and that's how we also have different types of rocks like sedimentary