Answers
Answer:
Question 1:
An element is a pure substance which cannot be broken down by chemical means.
Question 2:
A molecule is a group or cluster of two or more atoms held together by chemical bonds. A compound is a substance or material which is formed by two or more different types of elements which are combined chemically in a fixed proportion.
Question 3:
Electrons, Protons and Neutrons
Question 4:
Dmitri Mendeleev in 1869 developed the periodic table.
Answer:
An element is a substance that cannot be broken down into any other substance. made up or consisting of several parts or elements
Explanation:
Related Questions
Climates is determined by
Answers
Which of the following hormones is secreted by the pituitary in response to stimulus from the hypothalamus in response to high blood osmolarity?
A. Insulin
B. Acetylcholine
C. ADH
D. Glucagon
Answers
Answer:
C: ADH
Explanation:
Which best describes Earth's south magnetic pole?
O A. Aligned with the geographic North Pole
O B. Aligned with the geographic South Pole
O C. Stationary
D. Moving
Answers
Answer:
Which best describes Earth's south magnetic pole?
D - Moving
The south magnetic pole is the point on Earth's Southern Hemisphere where the geomagnetic field lines are directed vertically upwards. The Geomagnetic South Pole, a related point, is the south pole of an ideal dipole model of the Earth's magnetic field that most closely fits the Earth's actual magnetic field.
Best describes Earth's south magnetic pole D. Moving
What is the difference between the geographic North Pole and magnetic north pole?Geographic north (also called "true north") is the direction towards the fixed point we call the North Pole. Magnetic north is the direction towards the north magnetic pole, which is a wandering point where the Earth's magnetic field goes vertically down into the planet.
To learn more about The south magnetic pole, refer
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Two species that reduce competition by utilizing the same resource but at different times are exhibiting commensalism competitive exclusion principle predation resource partitioning
Answers
Answer:
Resource partitioning.
Explanation:
Some species avoid competition by coexisting with a different species, which benefits both species in the end and increases their chance for survival.
a.
Changes to the global climate could include
changes to temperature
b. changes to pressure
changes to precipitation
d. all of the above
C.
Please select the best answer from the choices provided
ΟΑ
B
C
OD
Answers
Answer:
d.all of the above ......
Answer:
D
Explanation:
Which of the following is transcribed into RNA?
O cell membrane
amino acid
O gene
O enzyme
Answers
the answer is gene
Explanation:
gene
Answer:
The answer might be Gene. I hope this helps. please tell me if wrong or right.
Explanation:
Please choose brainlest.
All viruses are made of proteins and
A prophages
B nucleic acids
C Bacteriophares
D endospores
Answers
Answer:c
Explanation:
Answer: B.) nucleic acids! :)
Explanation:
How do free-living flatworms, tapeworms, and flukes eat?
Answers
Answer:
Free-living flatworms ingest food
Explanation:
Which is a kingdom?
O A. Animalia
O B. Eukarya
C. Mammalia
O D. Prokarya
Answers
Lab: Effects of Human Activity on Freshwater Resources (essay)
Answers
Answer:
Our water resources face a host of serious threats, all of which are caused primarily by human activity. They include sedimentation, pollution, climate change, deforestation, landscape changes, and urban growth.
How do cells make up living organisms?
DNA is found inside the cells that make up all living organisms.
Multiple types of cells that are connected make up all living organisms.
Cells are needed to help all living organisms grow.
Cells provide the structural support that all living organisms need.
Answers
Answer:
multiple types of cells that are connected make up all living organisms
Explanation:
since biology explains the definition of cells, being the structural unit of all living organisms, it qualifies the statement that multiple types of cells connect to make up living organisms.
During a new moon, why can't we see the moon from Earth???
pls explain this in ur own words!!
Answers
Answer:
A new moon happens if the Moon is in the middle of the Sun and the Earth. The further side of the Moon is in full sunlight and the near side of the Moon doesnt get sunlight. The dark face of the moon can not be seen because sunlight illuminates the atmosphere.
Explanation:
Answer:
At new moon, the Moon is lined up between the Earth and the Sun. We see the side of the Moon that is not being lit by the Sun (in other words, we see no Moon at all, because the brightness of the Sun outshines the dim Moon!)
Explanation:
i got that from the test
The death rates in the United States decreased more than 40 percent from 1930 to 2015. Which factor could have contributed to this decrease?
OA
increased food insecurity
OB
better medical facilities and treatments
C.
decreased farmland
OD
refusal of vaccines
E
illiteracy
Answers
Answer:
The correct answer is - B. better medical facilities and treatments.
In the past century, the life expectancy in the United States have increased significantly, in fact it is almost doubled. The death rates have decreased for around 40% and the biggest reason for this trend are the advancements in the medical field. The medical facilities and treatments have improved significantly. The technological advancements contributed to the medical field a lot, made it much more efficient, and because of that the prevention of diseases, curing, and the saving of lives have skyrocketed, resulting in much better, healthier,and longer life of the population
i hope this will help u
mark it as brainliest
and rate it
Explanation:
Answer:
B. better medical facilities and treatments.
Explanation:
that's what I put down and I got it right
Which of the following is FALSE?
A.
Wheat, oats, and barley are incomplete proteins.
B.
Corn contains all of the essential amino acids.
C. Vegetables and legumes are incomplete proteins.
D.
All of the above
Answers
Answer:
the answer is D in this particular question
Explanation:
It's D
How would plant populations be affected if the populations of decomposers,
such as earthworms, decreased dramatically?
O A. Plant populations would flourish because they would no longer be
preyed upon by earthworms.
O B. Plant populations would suffer because the soil would have fewer
available nutrients.
O C. Plant populations would be unaffected by changes in the
earthworm population.
D. Plant populations would flourish because they would not need to
compete with the worms for nutrients.
pleaseee helppppp
Answers
Answer: B. plant population would suffer because the soil would have fewer available nutrients.
Explanation:
Earthworms are called a farmer's best friend as they make the soil more fertile. When earthworms purify the soil it makes it easier for the plants to grow as the soil is mineral rich. Decrease in the population of earthworms would make it difficult for the plants to grow because of the less fertile soil.
Hope it helps you!!!
Answer:
A
Explanation:
it’s right
The mass of ice heated by a student is 30 grams. Predict the mass of water
produces from the heating of the ice? Explain your answer
Answers
Answer:
The mass is 5 grams because the mass hasn't changed. only the state of matter.
The mass is still 30 grams as only the state of matter has changed.
Water on Earth is billions of years old.
True or False?
Answers
Answer:
True
Explanation:
Answer:
true
Explanation:
water is always being recycled
. Chemical digestion _____. ends in the small intestine ends in the esophagus begins in the esophagus begins in the stomach
Answers
Answer:
I believe that chemical digestion begins in the mouth and ends in the small intestine.
Hope his helps.
Explanation:
Water evaporates from a lake. Arrange the next steps of the water cycle in the correct order.
Water vapor condenses to form clouds.
Water flows down mountains and hills.
Water falls as rain, snow, and sleet.
Water joins streams or forms groundwater
Answers
Answer:
1. Water vapor condenses to form clouds.
2. Water falls as rain, snow, and sleet.
3. Water flows down mountains and hills.
4. Water joins streams or forms groundwater.
Answer:
1. Water vapor condenses to form clouds.
2. Water falls as rain, snow, and sleet.
3. Water flows down mountains and hills.
4. Water joins streams or forms groundwater.
A general explanation of what cancer is
An explanation of what the test for BRCA genes indicates for patients with
a positive or negative result
Benefits of testing
Drawbacks of testing
Answers
Answer:
Cancer is a disease caused by unregulated cell division,
if someone has a mutated version of the brca gene they are more likely to develop breast cancer because the brca gene regulates the cell cycle.
Benefits: can regularly test for cancer if you know you're at risk
drawbacks: may create anxiety in the person
Explanation:
During an earthquake, what is the most destructive type of seismic wave that caused a rolling motion?
1. P waves
2. S waves
3. Surface waves
4. Transverse waves
Answers
Answer:
Surface Waves
Explanation:
Surface waves cause more damage because they produce more ground movement and travel slowly, which makes it take longer to pass.
During an earthquake, the most destructive type of seismic wave that caused a rolling motion is known as a Surface wave. Thus, the correct option for this question is C.
What is an Earthquake?An earthquake may be defined as a sudden trembling of the surface of the earth. It causes great destruction, as a result of movements within the earth's crust or volcanic action. The circumstance of an earthquake is fatal to living organisms.
According to the context of this question, surface waves are those waves that significantly cause more threats to the surface of the earth. they effectively construct more ground trembling and movement. These waves travel gradually and this makes it take longer to pass.
Therefore, during an earthquake, the most destructive type of seismic wave that caused a rolling motion is known as a Surface wave. Thus, the correct option for this question is C.
To learn more about Earthquake, refer to the link:
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Which is a function of nucleic acids?
regulate cell processes
provide structure
break down energy
fight disease
Answers
Answer: Nucleic acids are large biomolecules that play essential roles in all cells and viruses. A major function of nucleic acids involves the storage and expression of genomic information. Deoxyribonucleic acid, or DNA, encodes the information cells need to make proteins.
Explanation:
Blood type is determined by the
the blood cells.
DONE
Answers
Answer:
Yes
Explanation:
Answer:
yes, the blood type is determined by the blood cells.
restriction enzymes are not sequence specific in that they do not recognize and bind specific DNA sequences
TRUE
FALSE
Answers
Answer: False
Explanation: DNA is ordered in threes and they DO recognize every nucleotide on a strand of DNA.
3. If a bar magnet's neutral region is broken in two, what will most likely occur?
A. Neither segment will have a north or south pole.
B. The segment that's longer will have a north and south pole.
C. Each of the two segments of the original bar magnet will have a north and south pole.
D. One segment will have only a north pole, the other segment will have only a south pole.
Answers
The Answer Is C. Each of the two segments of the original bar magnet will have a north and south pole.
Explanation:
It is because the the properties of magnets state that how many ever segments we divide the magnet the new segment will have north and south pole despite its size
Answer: C. Each of the two segments of the original bar magnet will have a north and south pole.
Explanation:
Which of these is a characteristic of eukaryotes? They do not have a nucleus. They are older than prokaryotes. They can be unicellular or multicellular. They do not have membrane-bound organelles.
Answers
Answer:
they are older than prokaryotes
Answer:
Prokaryotes are those organisms which have double-membrane bounded organelles and have a nucleus the answer is they can be unicellular or multicellular for-example the members of protist kingdom are unicellular whereas the members of animal kingdom are multicellular
Explanation:
I hope this will help you:)
Which contains dozens of carcinogen
Answers
Question 8 (1 point)
The scientific method utilizes which of these 4 strategies?
A) Hypothesis, Descriptive, Analysis, Publication
B) Hypothesis, Design, Analysis, Appllication
C) Hypothesis, Design, Analysis, Publication
D) Hypothesis, Research, Analysis, Replication
Answers
Answer:
D) Hypothesis, Research, Analysis, Replication
Explanation:
The scientific method is a research method used to produce knowledge. It consists of systematic observations, measures, experimentation, analysis, and verification of a hypothesis. It is based on two aspects: reproducibility (the capability of reproducing the experiment in any other place by any researcher) and refutability (susceptibility to be refused).
There are different steps to follow in a scientific method:
Definition and problem statement. The question for which there is not an answer yet.Hypothesis formulation. A hypothesis is a scientific conjecture, not verified that requires corroboration. Data collection and analysis. This step involves testing the observations.ResultsVerification of hypothesis. This step involves the deriving of the working hypothesis.Conclusions and Discussion.These steps also include previous knowledge about the study object. A question the investigator wants to answer. The goal, which is what the investigator wants to know. The hypothesis that the investigator makes in order to predict what is going to happen. The experiment is performed to answer the question. Conclusions where the hypothesis is rejected or accepted.
This scientific method needs to be replicable. Replication refers to the need of repeating a research study, under different situations, different subjects, and with different researchers, to determine the safety of the original findings and their possibility of generalizing them to other situations and participants.
The _____ is the basic unit of life. heart cell
Answers
Answer: Cell
Explanation: Cells make up all living things. Atoms make up all things that are not living.
This is beacuse the cells make up all living things. As atoms make up things tat are not living. And clearly because living things are kids, it would mean cells! Hope this helps!!!
Describe 3 ways climate change has affected resources for biodiversity
Answers
Answer:
Healthy ecosystems and rich biodiversity are fundamental to life on our planet. Climate change is affecting the habitats of several species, which must either adapt or migrate to areas with more favorable conditions. Even the smallest changes in average temperatures can have a significant effect upon the ecosystems.
