What were the first forms of life to exist on earth?
A. Plants
B. Fish
C. Humans
D. Bacteria
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Answers

Answer 1

Answer:

D. Bacteria

Explanation:

Answer 2

Bacteria, bacteria pretty much created everything


Related Questions

Describe in your own words how proteins are made from DNA

Answers

Answer:

I think they are made from DNA, because they are able to be in your body without causing problems. Your body knows what it can handle and the proteins match with your body's ways.  

Explanation:

will give Brainiest + 50 points for the correct answer
Identify the plant organs seen in the drawing.
A


B


C

Answers

Answer:

A) leaves

B) Trunk

C)Roots

Answer:

A) leaves

B) stem

C)Roots

HELP PLEASE BRAINLIST

Answers

d. 1 female has freckles
The answer is D
Dddddd

Four different blood types are found in human populations because of _______________ and _______________.

Answers

Answer:

of your body's natural defences and presence or absence of certain antigens

Explanation:

mark me as brainliest if it helped you

Which characteristic of water quality provides the most information regarding the health of a water system ?

Answers

Answer:

The Physical properties of water quality include temperature and turbidity.

Explanation:

Which organism is most related to birds?

Amphibians
Crocodiles
Ray-finned fish
Sharks

Answers

Answer:

Crocodiles are actually the closest living relatives to birds

Absorption happens the best when the food molecules are in what form?

Answers

Answer:

Smaller particles and energy

Explanation:

Digestion of food refer to breaker down of large food components into smaller particles. When food is ingested or swallowed, it go through slot of processes where it is acted upon by enzymes and it is then breakdown into smaller particles which can be absorbed by the villi in the small intestine. For examples carbohydrates can best be absorbed when it is broken down to monosaccharides like glucose in the intestines.

Please help! Will mark brainlisttt !!!!

Answers

Answer:

It is not possible for Shaun's aunt and the fella to have a child with large eyes because either parent needs at least one dominant allele for large eyes to have a possibility of a child with large eyes

25 POINTS! Please answer the following questions about Malaria. NO LINKS. This is for a project and is EXTREMELY important.
a. What type of pathogen caused the disease? Bacteria, viruses, fungi or
protists?
b. What is the name of the specific pathogen(s) that causes the disease?
In some cases this is the same name as the disease.
c. How is the disease spread? Does it infect people through physical
contact, blood, bodily fluids, or other?

Answers

A. Malaria is caused by a parasite.

B. The parasite that causes malaria is the Plasmodium parasite.

C. Malaria can spread to humans through the bites of infected mosquitoes.

Can someone tell me how sedimentary rocks usually form ? ( please one simple sentence)

Answers

Answer: many various sediments carried over time all compile to create a new rocks

Explanation:

Hope this helps

How many rings of cartilage make up the trachea?
1. 00
2. 50
3. 10
4. 20

Answers

I believe the answer is 20, sorry if it’s wrong :(

Help me please fill in the blank for conclusion don’t have a lot of time!

The purpose of this experiment was to find out how _________ affects _____________.

Answers

The density of a liquid affects its properties and how it interacts with other liquids.

The root system of a grass plant interacts with the vascular system to increase the ability of the plant to Group of answer choices

a.absorb carbon dioxide for photosynthesis
b.manufacture pigments for protection
c.obtain nutrient molecules
d.carry on gas exchange and absorb inorganic substances

Answers

I believe the correct answer is c. obtain nutrient molecules

The root system of a grass plant interacts with the vascular system to increase the ability of the plant to obtain nutrient molecules. That is option C.

Importance of the root system

The plant is made up of the root and the shoot systems which continually communicates for the growth and maintenance of the whole plant.

The root system is part of the plant that grows downwards. It has the following functions:

It holds the plant to the soil.

It absorbs water and nutrients from the soil.

It Conducts absorbed water and nutrients to stem

Therefore, the root system of a grass plant interacts with the vascular system to increase the ability of the plant to obtain nutrient molecules.

Learn more about plant root systems here:

https://brainly.com/question/3403854

When rocks and minerals are worn and broken down into small pieces by water, wind, or ice, the resulting particles are called ?

Answers

Sand i think? Maybe dust tho if sand isnt an option

Explanation:

The resulting particles are called sediments.

Rocks and minerals are disintegrated by agents of weathering such as water, glacial (ice) and wind. When these agents of weathering act on rock and minerals, they break down into small particles. These small pieces of weathered rocks and minerals is what is called sediments.

Sediments are pieces of weathered materials from rocks and minerals which can be carried by agents of erosion and deposited in another location.

Thus, the resulting particles from the breakdown of rocks and minerals are called sediments.

Learn more about sediments here:

https://brainly.com/question/11316458

What does the upper case letter in a genotype represent?
A. the recessive gene

B. the dominant gene

C. purple

Answers

Answer:

B. the dominant gene

What natural object inspired the structure of a road reflector? O A Aball-and-socket joint B. A fish's swim bladder O c. A burr D. A cat's eye

ONLY SAY THE RIGHT ANSWER IF YOU DONT KNOW IT DONT ANSWER​

Answers

Answer: a cats eye

Explanation:

I will give brain to correct answer!

When guard cells are full, they bulge. This increases the
size of the gap between them and opens the hole in the
leaf.
Which object is the best model of a guard cell?

A.) Straw

B.) Garden hose

C.) Water Balloon

D.) Strainer

Answers

Answer:

Water balloon

Explanation:

How do laws reduce air pollution?

Answers

Answer:

Laws reduce air pollution by a number of things, this could be by issuing a fine of about £20 or above. This is the most common way yet im sure in more serious cases prison sentences are issued.

ANSWER BOTH QUESTIONS about BIOLOGY PLEAASE!!

Answers

Answer:

Both are 1/A

Explanation:

Dominate traits will always show up because they over power the recessive trait, the only way a recessive trait would show would be if it was hom0zygous recessive (hh), otherwise the dominate trait would show (HH/Hh)

It can be easy to remember the second question, (Ph)enotype is for (Ph)ysical appearance.

Answer:

its 1 and a I think I'm not sure

What is nuclear fission?
O A. The joining of nuclei
B. The gain of nuclear mass
O C. The splitting of a nucleus
O D. The formation of an ion

Answers

Explanation:

C is the correct answer i.e. splitting of a nucleus

The splitting of a nucleus is known as the nuclear fission. So option C is correct.

Nuclear fission is the process of splitting an atom’s nucleus into lighter nuclei. This can occur naturally through radioactive decay, or it can be simulated in a laboratory by achieving the necessary conditions (e.g. neutrinos being bombarded). The resulting fragments usually have a mass that is less than that of the original nucleus.

We use the fission reaction in nuclear reactors to create electricity. The heat generated by the fission reaction is converted into a working fluid that passes through a steam turbine. The working fluid then drives a ship's propellers or turns the shafts of electrical generators.

To learn more about nuclear fission, refer to the link:

https://brainly.com/question/913303

#SPJ7

what happens if i fail science eoc in 8th grade in florida

Answers

Answer:

Theyll make you take a course in summer school or pass you if your grade in the class is high enough speaking from experience middle school grades dont count

Explanation:

The EOC (end of course assessment) won't make you fail.

It's a test that lets the teachers see your performance and how well do you know what they taught you.

But still, be sure to do your best and answer what you know.

There are seven levels of classification used to classify organisms, can someone list those seven in order from the smallest to most specific and largest and most general?

Answers

Answer:

Species, genus, family, order, class, phylum, kingdom

Can someone take it from there

Some animals have an organ called the gizzard. The gizzard is muscular and helps to crush up hard food. Earthworms and many birds, including chickens, have gizzards. Chickens swallow small rocks that help the gizzard to grind up food. Did plant-eating dinosaurs have gizzards too? No one has found an actual dinosaur gizzard, but they have found small piles of round rocks inside dinosaurs’ ribcages.

Based on its function, the gizzard is part of the
system.

Answers

Answer:fg

Explanation:

Bhuhhhfvg

compare the effect of human activity and natural processes on watersheds

Answers

Answer:

What effect do human activities have on natural resources?

Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.

this is somewhat similar

Some human activities that affect watersheds is Building dams and rerouting rivers are two examples of ways humans directly impact water in watersheds. Humans also use water as a resource, drawing from watersheds for our drinking water. This does not have to be a negative impact, as water usage can be monitored so that it is sustainable. Then on the other hand the natural factors the affect the health of a watershed is the quality and quantity of water in streams, rivers or lakes are dependent on its watershed. Another thing is The physical characteristics of a watershed, including geology, soil types, vegetation, topography and slope, also influence water- shed water quality. creek, stream or river to determine aquatic health.

I hope this helps.

Brainliest involved for the right answer! Also extra points will be given:)

Answers

Answer:

DNA is the recipe for how to build your body's proteins and mRNA is an index card it copies the DNA but doesn't have to stay in the nucleus. (1st option)

Explanation:

DNA carries genetic instructions for developing, growing and reproducing all known organisms and many viruses. mRNA, on the other hand, collects the DNA's instruction to the cells' protein-making part.

describe how scientists would have to use to classify M.smithii into archea domain

pls help asap

Answers

Explanation:

Archaea were initially classified as bacteria, receiving the name archaebacteria (in the Archaebacteria kingdom), but this term has fallen out of use. Archaeal cells have unique properties separating them from the other two domains, Bacteria and Eukaryota. Archaea are further divided into multiple recognized phyla

Answer(Explanation):

Methanobrevibacter smithii is the predominant archaeon in the microbiota of the human gut. M. smithii has a coccobacillus shape. It plays an important role in the efficient digestion of polysaccharides by consuming the end products of bacterial fermentation.

Archaea were initially classified as bacteria, receiving the name archaebacteria (in the Archaebacteria kingdom), but this term has fallen out of use. Archaeal cells have unique properties separating them from the other two domains, Bacteria and Eukaryota. Archaea are further divided into multiple recognized phyla.

Meteorologists often try to predict what the high temperature of a day will be several days beforehand. Why do meteorologists not try to predict the high temperature of a day six months in the future?

A. Weather does not follow any predictable patterns.

B. Meteorologists have this information but choose not to share it with the public.

C. It is impossible to know what season it will be six months in the future.

D. Weather is a highly complicated system that is very difficult to predict.

HELP

Answers

Answer:

Its D- Weather is a highly complicated system that is very difficult to predict.

Explanation:

Weather has a pattern so A is not the answer and no way Meteorologists would keep information to themselves so not B and lastly it's not impossible but just very hard so C is out, which leaves D.

What is the trait called that "showed" up or was "expressed" in all of the offspring?
A. Offspring

B. Heredity

C. Dominant

D. Recessive

Answers

Answer:

C. Dominant trait

List 5 organisms that are common ancestors to a Leopard.

Answers

Answer: I can only list one (sorry): saber-toothed cats.

Explanation: . . .

1. Why does the immune system make memory cells?

2. Plants follow a reproduction pattern called alternate generations. Explain the two processes in alternate generations.

3. Describe the difference between sexual and asexual reproduction. Give at least one example organism for each type.

4. Many of your body’s responses operate off of either negative or positive feedback loops. When you are cold, you shiver. Explain why that happens.

Answers

But cells in our immune system can remember old foes just fine, and we've never really been sure exactly how they manage it. A new study has filled in missing details on the steps our body takes to remember pathogens, finally revealing the steps our immune cells take to preserve a reference library of past battles.

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"Our analysis shows that the LCOE per megawatt-hour for onshore wind, solar PV and offshore wind have fallen by 49%, 84% and 56% respectively since jobs that coal-and gas-fired power stations and nuclear, currently do. Battery energy storage co-located with solar and wind farms are starting to be competitive with coal and gas power, even without subsidies, in providing "dispatchable power" that can be delivered when it is needed, rather than only at the time it is being generated when the wind is blowing or the sun is shining. Battery storage can provide back-up power for renewable projects for anything from one to four hours at a time, BNEF says. Tifenn Brandily, energy economics analyst at BNEF, said: "Solar PV and onshore wind have won the race to be the cheapest sources of new 'bulk generation' in most countries, but the encroachment of clean technologies is now going well beyond that, threatening the balancing role that gas-fired plant operators, in particular, have been hoping to play." The advance of offshore wind is also hugely significant, because the technology has long been seen as an expensive generation option in the near term compared to onshore wind or solar PV, although it was hoped that in time the possibility of using bigger turbines and floating platforms, coupled with the stronger and steadier winds at sea would lead to sharp cost reductions. But those costs have come down much more quickly than forecast thanks to technological advances, larger turbines and auction programs for new capacity - offshore wind is now below $100/MWh globally, with some European projects coming in well below that, compared to more than $220 just five years ago. Siemens Gamesa has just announced its 10MW turbines will be used in the world's first subsidy-free offshore wind project, Vattenfall's Hollandse Kust Zuid 1 & 2 scheme. "The low prices promised by offshore wind tenders throughout Europe are now materializing, with several high-profile projects reaching financial close in recent months. Its cost decline in the last six months is the sharpest we have seen for any technology,"Giannakopoulou said. What type of cost are batteries for the renewable-energy industry? 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Based on the above financial statements, calculate the following ratios for 2021: income statement Sales 480,000 cost of goods sold 243,200 salaries expense 55,200 depreciation expense 24,000 interest expense 4,500 rent expense 36,000 gain on equipment 0 loss on equipment disposal 1,400 364,300 net income 115,700 Statement of Retained Earnings Beginning Balance - Retained Earnings $ 36,300 Plus - Net Income 115,700 Less - Dividends (18,000) Ending Balance - Retained Earnings $ 134,000 Balance sheets 2020 2021 change Assets: Cash 27,500 72,600 45,100 Accounts Receivable 32,600 47,600 15,000 Inventory 48,000 54,800 6,800 prepaid expenses 7,200 5,200 (2,000) Equipment 56,000 77,000 21,000 Accum. Depr - Equipment (26,500) (32,500) (6,000) total assets 144,800 224,700 Liabilities: Accounts Payable 12,700 25,700 13,000 accrued Liabilities 3,800 5,000 1,200 Bonds Payable 72,000 40,000 (32,000) total liabilities 88,500 70,700 shareholders Equity: Common Stock 20,000 20,000 0 Retained Earnings 36,300 134,000 97,700 total equity 56,300 154,000 total liabilities and shareholder equity 144,800 224,700 A. Current Ratio B. Gross Profit Percentage C. Debt Ratio D. Debt to Equity Ratio 2/3 y = 1/4 y ___?A) 3/8B) 5/12C) 11/12D) 2 2/3 DUE IN 30 MINUTES PLEASE SHOW FULL WORK :[ Hi guys it's nothing much but please help me out for braniest and 50 points NO LINK'S thank you 7 1/2 divided by 3/4 =?