Answer:
Because they don't have fertilizer.
Explanation:
Well, if this was a long time ago, then farmers did not have fertilizer. So, there are bacteria on the roots of plants that convert nitrogen into a usable form. It's very important for growing, and when farmers harvest the crop, not much of the nitrogen is returned to the land, so it is not as fertile. Fertilizer is largely consisted of nitrogen, so that is why farmers use fertilizers today. But "a long time ago," farmers did not have fertilizer.
PLEASE HELP ILL GIVE BRAINIEST
Answer:
Decomposers (Figure below) get nutrients and energy by breaking down dead organisms and animal wastes. Through this process, decomposers release nutrients, such as carbon and nitrogen, back into the environment. These nutrients are recycled back into the ecosystem so that the producers can use them.
Explanation:
A catalyst is a ______.
Answer:
a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
Answer:
A substance that speeds up chemical reactions.
Explanation:
What is the critical mass of a species?
A:The weight of all representatives of a species.
B:The weight of the last representative of a species.
C:The number of individuals that must exist for a species to continue.
Answer:
The number of individuals that must exist for a species to continue
Explanation:
I just had it on a quiz. Can I have brainliest?
The critical mass of a species is the number of individuals that must exist for a species to continue. Therefore, the correct option is C.
What is the critical mass of a species?The critical mass of a species refers to the minimum number of individuals that are required for a population to maintain its viability and continue to survive and reproduce in a given environment. This is also known as the minimum viable population (MVP) size.
The concept of critical mass is important in conservation biology because small populations are often more vulnerable to extinction due to genetic factors, environmental fluctuations, and other factors.
Therefore, understanding the critical mass of a species is significant for determining appropriate conservation strategies and protecting endangered species. Therefore, the correct option is C.
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Individuals in a species have genetic variation that can be passed on to their offspring
Answer: Genetic variation within a species can result from a few different sources. Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation. ... As a result, the tree-colored moths are more likely to survive, reproduce, and pass on their genes.
Explanation:
in the late 1600s, english astronomer edmond halley presented a model of earth’s structure. helmet originally claimed that earth was
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When a human consumes an apple, they are consuming the glucose that
was created during photosynthesis by the plant. This glucose will give the
human energy so they can move their muscles. What kind of energy
transformation is happening when a human uses glucose to move?
A. Chemical to mechanical
B. Solar to chemical
C. Thermal to mechanical
D. Chemical to thermal
Answer:
D I think
Explanation:
A strand of DNA consists of 35% adenine. What is the percentage of cytosine in that same
molecule of DNA?
Answer:
20.5%
Explanation:
Hope this helps!!
What is the relationship between genes, traits and proteins?
Answer:
Genes are transcribed into mRNA, the mRNA is then translated into proteins, which determines specific traits.
Explanation:
because i used brainly
Which of the following is a function of lipids?
A.
Breakdown chemical compounds
B. Carry heredity information
C. Form boundaries of the cell membrane
D. Make proteins
Answer:
C. Form boundaries of the cell membrane
Explanation:
The functions of lipids include storing energy, signaling, and acting as structural components of cell membranes. Lipids have applications in the cosmetic and food industries as well as in nanotechnology.
Given the properties of minerals, why can hydrochloric not be a mineral?
Answer:
Quartz
Explanation:
Quartz does not react with hydrochloric acid.
Its is pink in color and has anon metallic luster. It has a specific gravity of 2.65. Quartz is continuous framework of SiO4 , with each oxygen being shared with two tetrahedra, giving an overall chemical formula of SiO2.
A number that describes how likely it is that an event will occur is the _______ of the event.
Answer: The probability of an event is a number describing the chance that the event will happen. An event that is certain to happen has a probability of 1. An event that cannot possibly happen has a probability of zero. If there is a chance that an event will happen, then its probability is between zero and 1.
The number Which describes how likely it is that an event will occur is the probability of the event.
What is probability?The number describing a chance that an event will occur is called probability. It can be expressed in the form of numbers, from 0 and 1, or also by percentage from 0% to 100%. Higher probability of an event means that there are greater chances that event will occur.
Probability is branch of mathematics which is also applied in other fields such as, science, finance, statistics, gambling, computer science, machine learning, artificial intelligence and game theory.
Representation of probability in its formal terms, is called as probability theory. The probability theory is mostly used in risk assessment and modelling that is, it is used by insurance companies and markets.
Therefore, chances of number of event occur is called probability.
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In order to create a big storm, the HIGH LEVEL TEMPERATURE had to be... A.Very Cold B.Cold C.Cool
Question:
In order to create a big storm, the HIGH LEVEL TEMPERATURE had to be... A.Very Cold B.Cold C.Cool
Answer:
A, because in order to create a big storm, the temperature has to be at least 40-20 degrees Fahrenheit (below 30 is freezing point, aka snow), and that would be weather where you would need to wear a thick jacket and warm pants.
If this helped, your welcome! Please know that I might be wrong, and if I am, I am truly sorry for that. But If you would, please make me brainliest.
- niaxfandoms (ig and yt)
Cholesterol is an example of a ______________, one of the main classes of organic compounds.
Answer:
steroid family
Explanation:
Chemically, cholesterol is an organic compound belonging to the steroid family; its molecular formula is C27H46O.
what are eukaryotes multicellular makes its own food are called?
A.Protista
B.Plantee
C.Fungi
Answer: B. Plantee
Explanation: Plants are eukaryotic and multicellular. They make their own food using photosynthesis.
A reaction that absorbs energy from the environment a reaction that requires an activation energy a reaction that releases energy into the environment a reaction that does not involve a change in energy
Answer:
Endothermic reaction
Explanation:
An endothermic reaction is a chemical reaction that takes energy from the atmosphere. It requires activation energy. An exothermic reaction is the reverse of an endothermic reaction. Reversible reactions are where the compounds will react to the initial reagents.
Describe What
happens to a planarian when
it is cut into two pieces?
Put the steps of Protein Synthesis below into the correct order.
4 points
Step 1
Step 2
Step 3
Step 4
A Protein
molecule is
produced
An mRNA
molecule is
produced
mRNA interacts
with a Ribosome
DNA interacts
with RNA
polymerase
The correct order is DNA interacts with RNA polymerase (1), the mRNA molecule is generated (2), mRNA interacts with a ribosome, and protein is produced (4).
What is transcription?Transcription (gene transcription) is the process by which a fragment of DNA is employed to generate an mRNA.
This messenger RNA (mRNA) then travels to the ribosomes in the cytoplasm to generate a protein.The process of translation refers to the protein synthesis by an mRNA template.In conclusion, the correct order is DNA interacts with RNA polymerase (1), the mRNA molecule is generated (2), mRNA interacts with a ribosome, and protein is produced (4).
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Disadvantage
Chemical
Advantage
1.
1.
Dish Detergent
2.
2.
1.
Chlorine
2.
How is the process used to produce sex cells different from
the process used to produce body cells?
The process used to produce se_x cells which is different from the process used to produce body cells is called meiosis.
What is meiosis?Meiosis is a cellular process that generates four daughter germinal cells having half genetic material.
Conversely, mitosis produces two genetically identical somatic (body) cells.In conclusion, the process used to produce se_x cells which is different from the process used to produce body cells is called meiosis.
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Put the steps of the greenhouse effect in the correct order.
I. Infrared radiation travels through the atmosphere as heat to leave Earth.
II. Radiation from the sun enters the atmosphere.
III. Increased greenhouse gases trap more heat, raising global temperature.
IV. Infrared radiation is absorbed by greenhouse gases and is reflected back down to Earth.
A. II, IV, III, I
B. I, II, III, IV
C. I, III, II, IV
D. II, I, IV, III
Answer:
II, IV, I, III
Explanation:
At first the Solar radiation hits the earth~
The sun's energy is then absorbed~
Head radiates into space from Earth~
This traps the heat and makes Earths Temperature hotter~
Hope this helps uwu
At first the Solar radiation hits the earth~ The sun's energy is then absorbed~ Head radiates into space from Earth~ This traps the heat and makes Earths Temperature hotter~ are the correct arrangement of green house effects. Hence, option A is correct.
What is green house effects?Green house effects are the rays in which heat are taken hold close to earth surface that is near to the earth. These effects have covered the earth like a blanket and keeps the planet toaster and warmer than it could be without them.
Greenhouse gases on Earth trap heat in the atmosphere, warming the whole globe. The primary gases that cause the greenhouse effect are fluorinated gases, as well as naturally occurring gases such carbon dioxide, methane, nitrous oxide, and water vapour which are synthetic.
Thus, option A is correct.
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What are the long whip-like extensions used to move the protists to the nutrients needed?
Answer:
Flagellum
Explanation:
Flagellum are the long whip-like extensions that help protists move. They spin quickly, like a boat propeller to move the protist.
Answer:
flagellum are long whip-like extensions used to move the protists to the nutrients needed.
Explanation:
I saw it in a passage
Which level includes organisms that get their energy solely from an abiotic factor?
Answer:
Not enough information, but I would have to go with producers.
Explanation:
Producers use abiotic factors (mainly the sun and water).
Help please, I couldn't find the instruction for this, and my teacher said skip it, so I dont know the answer for it ._.
Answer: 1.rod, coccus, or spiral 2. peptidoglycan 3. flagella.
Explanation:
What happens to the chromosomes when a cell divides to make a copy of itself?
Answer:
the cell copies or replicates its chromosomes and then splits the copied chromosomes equally to make sure each daughter cell has a full set.
Answer:
Mitosis is used to produce daughter cells that are genetically identical to the parent cells. The cell copies or "replicates" it's chromosomes and then splits the copied chromosomes equally to make sure that each. daughter cell has a full set.
Explanation:
I majored in Biology
Help plz
Vestigial structures, such as the appendix, are body parts that don't seem to serve a
purpose in humans. How are vestigial structures important evidence for evolution?
A. They provide clues about structures that were important to our ancestors.
B. They provide clues about what future generations of humans will look like.
C. They help identify body parts in fossils.
D. They are evidence that humans used to eat different foods.
Answer:
A
Explanation:
1. Describe the relationships between the
cell cycle and cell differentiation and
how they maintain complex organisms.
20 points ! multiple choice
4. Which part of the replication process helps reduce the chance for genetic mutation?
a. insertion of RNA primer sequences
b. sealing the gaps between fragments
c. opening multiple origins of replication
d. proofreading new DNA strands
Answer:
D
Explanation:
Key points:
- Cells have a variety of mechanisms to prevent mutations, or permanent changes in DNA sequence.
- During DNA synthesis, most DNA polymerases "check their work," fixing the majority of mispaired bases in a process called proofreading.
- Immediately after DNA synthesis, any remaining mispaired bases can be detected and replaced in a process called mismatch repair.
- If DNA gets damaged, it can be repaired by various mechanisms, including chemical reversal, excision repair, and double-stranded break repair.
that's from khan academy^
Can a single cell be living but not be an organism?
1. Yes
2.no
No, this is not possible.
Letter A in the kidney indicates a structure known as
A) a vein
B) an artery
C) the ureter
D) a Bowman's capsule
Compare and contrast and define the following:
Autotrophic/Heterotrophic
Help a sister outtt
Answer:
Autotrophs are organisms that prepare their own food through the process of photosynthesis,
heterotrophs are organisms that cannot prepare their own food and depend upon autotrophs for nutrition.
Explanation: