According to the fossil record, which of the following was the first organism on land? 1.amphibian
2. reptile
3. mammal
4. plant

Answers

Answer 1

Answer:

It should be mammal

Explanation:

I hope this helps


Related Questions

WILL GIVE BRAINLIEST IF YOU EXPLAIN YOUR WORK!!
1. What is the desired FUNCTION of a garden?
2. What are the subsystems in a garden? Explain.

Answers

Desired function of a garden is a planned space, usually outdoors, set aside for the display of an area.

The subsystems in a garden are plants, soil, water.

( I’m not entirely sure if I’m correct because I don’t really know what subsystem means but this is the best I got.)

Answer: A garden is a planned space, usually outdoors, set aside for the display, cultivation, or enjoyment of plants and other forms of nature, as an ideal setting for social or solitary human life. The single feature identifying even the wildest wild garden is control.

Explanation:

Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air). which means gardens to i think

Most neighborhood streets are illuminated at night by streetlights. The streetlights are _____ and _____. Therefore, they are likely to be _____ by the competitive market. nonrival; excludable; underprovided nonrival; nonexcludable; underprovided rival; excludable; efficiently provided nonrival; nonexcludable; overprovided

Answers

Answer:

nonrival; nonexcludable; underprovided.

Explanation:

In a perfect competition, there are many buyers and sellers of homogeneous products, and there is free entry and exit in the market.

This simply means that, in a perfectly competitive market, there are many buyers and sellers (price takers) of homogeneous products (standardized products with substitute) and the market is free (practically open) to all individuals or business entities that are willing to trade all their goods and services.

Generally, a perfectly competitive market is characterized by the following features;

1. Perfect information.

2. No barriers, it is typically free.

3. Equilibrium price and quantity.

4. Many buyers and sellers.

5. Homogeneous products.

A substitute product can be defined as a product that a consumer sees as an alternative to another product and as such would offer similar benefits or satisfaction to the consumer.

For substitute products (goods), the cross-price elasticity of demand is always positive because the demand of a product increases when the price of its close substitute (alternative) increases.

A nonexcludable good simply means that it's near impossible for a user to effectively exclude others from using the good. Thus, each and every individual have access and can use the goods.

Basically, all public goods such as streetlights are nonrival and nonexcludable goods.

Similarly, nonrival goods refer to goods that can be accessed, processed and consumed (used) by multiple consumers at a specific period of time.

Additionally, any good that is nonrival and nonexcludable is said to be a public good.

In this scenario, most neighborhood streets are illuminated at night by streetlights. The streetlights are nonrival and nonexcludable. Therefore, they are likely to be underprovided by the competitive market and this is generally considered to be a market failure.

Hence, a market failure arises when there is inefficiency in the distribution or allocation of goods and services in a free market.

This ultimately implies that, the demand of the consumer of these goods and services are not being met with the level of supply (output) required i.e the forces of demand and supply are not efficient in producing the level of output required by the economy. Some of the causes of market failure are imperfect information, monopoly, oligopoly, externalities, etc.

Plz help!
I well mark brainliest!!

Answers

I think it’s a, hopefully you get it right!

Answer:

I think the answer is A.

Explanation:

I had the same exact test question and I put A so I hope this helps.

birth defects due to radiation are a concern also. why is a fetus especially at risk?​

Answers

a fetus is especially at risk because they are under developed and easily susceptible to sicknesses or radiation

Of the babies that survive, however, few will have birth defects related to the exposure, regardless of how much radiation they were exposed to. Large radiation doses to the fetus during the more sensitive stages of development (between weeks 2 and 18 of pregnancy) can cause birth defects, especially to the brain.

HOPE THAT HELPED :)

MARK ME BRAINLIEST PLEASE

an organism that is made of many eukaryotic cells and eats
snails. Which kingdom of life is it?

Answers

Answer:

animalia.

Explanation:

the answer is animalia

PLEASE HELP! Scientists performed studies on mussels and clams. They placed these different species in fresh water that had contaminants commonly found in agricultural runoff and human and animal waste. Within a few days, the mussels and clams had removed the majority of the contaminants. How do these findings relate to ecosystem services in natural environments?

A.
Introducing new species of mussels and clams will help reduce erosion and runoff into rivers.

B.
Increasing the biodiversity of mussels and clams in freshwater ecosystems will improve water quality.

C.
Growing mussels and clams in rivers will provide humans with a steady source of food.

D.
Using a single species of mussel or clam will remove greenhouse gasses from the atmosphere.

Answers

Answer:

b

Explanation:

biodiversity means increase value or increase the amount of mussels and clams in rivers to increase water quality

Blood plasma is made up mostly of:

Answers

Answer:

It constitutes more than half of the blood's volume and consists mostly of water that contains dissolved salts (electrolytes) and proteins.

Explanation:

what are the interactions between atoms that are hydrolyzed by fungi to release nitrogen from these molecules?

Answers

A small amount of nitrogen is fixed by lightning, but most of the nitrogen harvested from the atmosphere is removed by nitrogen-fixing bacteria and cyanobacteria (formerly called blue-green algae). The nitrogen cycle transforms diatomic nitrogen gas into ammonium, nitrate, and nitrite compounds.

Which statement BEST represents a hypothesis
A: the birds ate 10 mg of food
B: the mice have gray colored fur
C: if rabbits eat twice there normal Amount of food, they will gain weight
D: the fish in the aquarium died becuase the water temperature was too high

Answers

Answer:

I think C. would be the correct answer but I'm not 100% sure if that's correct.

(If you think I'm wrong then DONT say C is the answer.)

According to the diagram how are the three components
of a nucleotide important to the structure of DNA?

Answers

Answer:

A nucleotide of DNA is made up of three parts: a nitrogenous base, a 5-carbon sugar, and a phosphate group. The four nitrogenous bases in DNA are adenine, cytosine, guanine, and thymine.

The phosphate group linked with deoxyribose sugar to make the framework for the nitrogenous bases. The phosphate group and sugar molecule make the DNA backbone and support it. These backbones hold nitrogenous bases and make a monomer of DNA. Nitrogenous bases make DNA stable and hold both backbones together. These bases also make DNA functional.

The benefit of social behavior that refers to searching for and collecting food is referred to as .

Answers

Answer:

Ngl bro i like your pfp, its fire

Answer:

Foraging

Explanation:

how can you predict which way water moves across a cell membrane?
a) water will move from high to low concentration
b) there is no way to predict the movement of water
c) water will move from low to high concentration

Answers

Answer:

The answer is C.

Explanation:

Water will move from an area of lower solute concentration to an area of higher solute concentration.

can somebody please help me?

Answers

Answer:

100% of the offspring would be black fur, black eyes (16/16)

Explanation:

(Because the info. wasn't included here, I'm assuming black fur and black eyes are dominant, BBEE, to the recessive white fur and red eyes, bbee)

For BBEE x bbee, you'd create a typical dihybrid true-breeding punnett square , where the first top row would be BE , BE, BE , BE , and the vertical/side row would be be, be, be, be.

Cross these alleles as you would typically for any punnett square, and you'd see that all the offpsring would result in BbEe genotypes, which is true of any true-breeding dominant x recessive cross, which always results in the dominant phenotype being 100%.

So...

Black Fur and Black Eyes : 16/16 (100%)

Black Fur and Red Eyes: 0/16

White Fur and Black Eyes: 0/16

White Fur and Red Eyes: 0/16

What types of regulations are designed to bring awareness to and reduce the amount of air pollution?


clean air acts

industry regulation acts

pollution for the people acts

water pollution controls

Answers

the clean air acts im pretty sure

Answer:

clean air acts

Explanation:

the layer of the atmosphere that contains the ionosphere is the what?

Answers

Answer: thermosphere

hope this helps

Answer:

this is called the thermosphere

Help with this??
Aaaaaaa

Answers

Answer and Explanation

25%

Answer:

25%

Explanation:

sorry

which statement is true about the rates of cell divvision in eukaryotes

Answers

Answer:

More information needed

Explanation:

Your question seems to be multiple choice however the statements to choose from are not shown

The difference in the chromosome arrangement during meiosis in the metaphase plate can lead to greater genetic diversity in a population. Explain your answer

Answers

Explanation:

Like mitosis, meiosis is a form of eukaryotic cell division. However, these two processes distribute genetic material among the resulting daughter cells in very different ways. Mitosis creates two identical daughter cells that each contain the same number of chromosomes as their parent cell. In contrast, meiosis gives rise to four unique daughter cells, each of which has half the number of chromosomes as the parent cell. Because meiosis creates cells that are destined to become gametes (or reproductive cells), this reduction in chromosome number is critical — without it, the union of two gametes during fertilization would result in offspring with twice the normal number of chromosomes!

Apart from this reduction in chromosome number, meiosis differs from mitosis in yet another way. Specifically, meiosis creates new combinations of genetic material in each of the four daughter cells. These new combinations result from the exchange of DNA between paired chromosomes. Such exchange means that the gametes produced through meiosis exhibit an amazing range of genetic variation.

Finally, unlike mitosis, meiosis involves two rounds of nuclear division, not just one. Despite this fact, many of the other events of meiosis are similar to those that occur in mitosis. For example, prior to undergoing meiosis, a cell goes through an interphase period in which it grows, replicates its chromosomes, and checks all of its systems to ensure that it is ready to divide. Like mitosis, meiosis also has distinct stages called prophase, metaphase, anaphase, and telophase. A key difference, however, is that during meiosis, each of these phases occurs twice — once during the first round of division, called meiosis I, and again during the second round of division, called meiosis II.

What advantage does a reliable web page have over published textbooks and
encyclopedias?
A) It is easily updated with the most recent information.

B) All web pages are peer reviewed.

C)Anyone can publish information on a web page.

D) Textbooks and encyclopedias are always more accurate than web pages.

Answers

A


Bkwcbkwfbicefebdwbdhdhd

Answer:

A

Explanation:

because it is easily updated with recent information

Which of the following does NOT provide evidence of the theory of evolution?

a. homologous structures
b. fossil records
c. biochemical evidence
d. analogous structures
e. embryology

Answers

Answer:

homologous structures

Analogous structures are different species that are similar in function but not in structure and which do not from a common ancestral feature.

What is evolution and examples?

A person modifying their opinions about a social issue after living in a seprate part of the world for a period and meeting others who differ.

Natural selection in association hat indicates the economic or social success of people who are more powerful or Comptent than others.is

Thus, option "D" is correct, Analogous structures are different species that are similar in function.

To learn more about evolution click here:

https://brainly.com/question/13492988

Which of the following is an abiotic factor in a biome

Answers

Answer: C

Explanation: Abiotic means non living so Wind, sunlight, soil, temperature, atmosphere, and water.

Abiotic is non-living so I think it’s C.

A diet that is mainly based on unrefined whole grain, fruits, vegetables, other plant products, though may contain small amounts of animal-derived foods,
can be called all of these except for which?
Select one:
a. Prudent diet

b. Healthy diet
C. Plant-based diet
D.Western diet

Answers

Answer:

Healthy diet

Explanation:

all of those have vitamins and they provide us energy

Answer:

b. healthy diet

Explanation:

Because vegetables , fruits and other plant products are vitamins.

How is mitosis different in plants and animals?

Answers

The most important and observable difference in the plant animal cells mitosis is the cytokinesis.

In plants a new cell plate is formed between the daughter cells for the future cell wall, while in animal cells the cell membrane constricts to separates the parent cell into daughter cells

Answer:

The main difference is cell plate formation and how they form the daughter cells during cytokinesis. In plants, they lack centrosomes. A new cell plate will form between the daughter cells for the future cell wall. In animal cells the cell membrane will rather constrict to separates the parent cell into the daughter cells. Plants also do not undergo cell furrowing, unlike animals cells.

The heart is one of the first parts of the embryo to develop. What part of the stem cells provides instructions for building the heart?

Answers

Answer:

answer d

Explanation:

DNA provides instructions for building the heart

Answer :

The answer is D

01:46:45
Which statement correctly describes a feature of the rock cycle?
O Rocks are preserved through the process.
O Rocks change from one type to another.
O Different rock groups are not related to one another.
O Rocks change from one type to another in a specific order.

Answers

Answer:

The correct description of a feature of the rock cycle is:

O Rocks change from one type to another.

Explanation:

Sedimentary, metamorphic, and igneous rocks are the three main rock types.  Together, they form the universal rock cycle.  A sedimentary rock, for example, can change from its known state to another state by passing through crystallization, metamorphism, erosion, and sedimentation.  There are no specific orders for the change.  The processes that they pass through determine the resulting type.

Answer:

Rocks change from one type to another.

Explanation:

Given the size of the coquí, what is surprising about its call

Answers

Answer:

its the loud sound the males make at night.

Explanation:

the sound has two purposes the scream CO to repel males while KEE to find mates

Describe early land plants

Answers

Answer:

The following seems to be a summarization of the topics.

Explanation:

Not too far from the rich water supply or water bodies can early soil vegetation or flora persist, is considered as early land plants.Throughout history, land organisms have different ways of surviving with rising drought, our rocky earthly environment is turned into such an environment of multilayered sediments as well as varied biotic organisms.

What is Climate Change?


Explain your answer.

Answers

What is Climate Change?

Climate change is a change in the usual weather found in a place.

How it helps us:

Studying the climate helps us predict how much rain the next winter might bring, or how far sea levels will rise due to warmer sea temperatures. ... We can also see which regions are most likely to be affected by extreme weather, or which wildlife species are threatened by climate change.

How it works:

As the earth's atmosphere heats up, it collects, retains, and drops more water, changing weather patterns and making wet areas wetter and dry areas drier. Higher temperatures worsen and increase the frequency of many types of disasters, including storms, floods, heat waves, and droughts.

How it affects us:

Human health is vulnerable to climate change. The changing environment is expected to cause more heat stress, an increase in waterborne diseases, poor air quality, and diseases transmitted by insects and rodents. Extreme weather events can compound many of these health threats.

Which of the following will most likely result if all of the primary consumers are removed from this ecosystem?

Answers

Answer:

Secondary consumers will lower in numbers and the producers (plants) will be overabundant.

Explanation:

Okay so secondary consumers eat the primary consumers and the primary consumers eat the producers (plants). If there are no primary consumers, there is no one eating the plants which will lead to the producer population growing because there's less stopping them from growing in numbers. The secondary consumers will be in trouble because the secondary consumers don't eat plants. If there are no primary consumers, the secondary consumers won't be able to eat and the numbers of secondary consumers will decrease.

a lot more prodcers

Explanation:

Imagine that a company is planning to build a new factory in your region that will provide hundreds of well-paid jobs, but will cause minor amounts of air pollution within a two-mile radius. Answer the following questions: How would you rate your support for the factory if you lived 50 miles away from its planned location? How would you rate your support for the factory if you only lived one mile away from its planned location?

Answers

Answer:i would rate it 4/5

Explanation:if it is going to cause minor amounts of air pollution within a two mile radius and you live 50 miles away the air pollution wont harm you

If I live 50 miles away from the planned location then I would rate 10/10 for the planning but if I live  within one mile then I will rate only 2/10.

If I am living 50 miles away i will not be affected by the pollution caused by the factory rather I will be gained by the facilities provided by the factory.

But if I am within one meter of the factory location then I have to face the pollution caused by it , which is going to effect my health condition. so I will rate it lesser.

refer https://brainly.com/question/24704410

#SPJ2

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