Answer:
There are no gram-positive archaea because archaea lack peptidoglycan in their cell walls, meaning that the archaic cell walls are more similar to gram-negative bacterial walls, although they do show a greater variety of cell wall types. And bacteria do have this.
The actual exchange of gas occurs at the
Answer:
gas station, or butt
Explanation:
the gas station can fill your car and exchange gas with the pump. when you fart you exchange gas with the air.
Select the correct answer. PLZ HELP 11+points
Where do humans fit in the food web?
A)carnivores
B)decomposers
C)omnivores
D)producers
Answer:
C - Omnivores
Explanation:
Answer:
C. Omnivores
Explanation:
Humans consume both plants and animals, so they’re omnivores. Producers make their food in the presence of sunlight. Carnivores eat other consumers. Decomposers consume dead plants and animals.
What are the key features of a tundra?
A. cold winter, thin acidic soil, evergreen trees
B. many evergreen trees, short moist summers, long snowy winters
C. long cool summers, short dark winters, migrating animals
D. treeless, permafrost, cold dark winters
Answer:
D. treeless, permafrost, cold dark winters
Explanation:
The correct answer would be D
Tundra is a habitat in which tree growth is hampered by cold temperatures and short growing seasons. Therefore, option (D) is correct.
What is a tundra?The freezing temperatures and short growing seasons of a tundra biome make it difficult for trees to develop in this sort of ecosystem.
Most of the time, it is cold, but in the summer, it can get quite warm. The winters on the tundra are long, dark, and very cold. For six to ten months of the year, temperatures are below 0 degrees Celsius. Because the temperatures are so low, there is a layer of frost below the surface. This is a layer of frozen ground.
Arctic tundra is found above the Arctic Circle in Alaska, Canada, Russia, Greenland, Iceland, and Scandinavia, or in Antarctica. Alpine tundra are high on mountains where nightly temperatures are below freezing.
Therefore, option (D) is correct.
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When population grows past the ecosystem’s carrying capacity, what happens to the population?
A. Continues to grow
B. The population starts to die off to return to carrying capacity
C. The population will go extinct due to lack of resources
D. The population grows, then finds a new carrying capacity.
Answer:B animals will die since there arent enough resources for everyone until there is enough for the remaining population to use
When Population growth past the ecosystem’s carrying capacity, then the population starts to die off to return to carrying capacity (Option B).
The carrying capacity refers to the maximum number of individuals of a population that can be supported by particular environmental conditions.Carrying capacity depends on both biotic factors (e.g., presence of predators, food availability, etc.) and abiotic factors (e.g., water availability, living space, etc).When a population passes its carrying capacity, then the environment becomes unsuitable for the individuals of that population to survive.In conclusion, when population growth past the ecosystem’s carrying capacity, then the population starts to die off to return to carrying capacity (Option B).
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How can these artificial reefs protect biodiversity in the ocean ecosystem?
Answer:The reefs create a shelter for organisms and food
Explanation:Therefore it now created a more populated area for more animals or organisms to live.
Answer:
Plato
Explanation:
Many animals depend on corals for food and protection. By restoring the reefs using this method, they may be able to protect other populations of organisms from declining as well.
The chart shows information about three different embryos early in their development.
Which is best supported by the information in the chart?
Species X and Y are not related to humans.
Species Y and Z are not related to humans.
Species X and Z are related to humans.
Species X and Y are related to humans.
Answer:
Species X and Y are related to humans.
Explanation:
The chart shows information about three different embryos early in their development. The best supported by the information in the chart is that Species X and Y are related to humans. Thus, option D is correct.
What is an embryo?An embryo refers to the early development stage with respect to the multicellular organism. The organism should be again produced se-xually. Moreover, the development of embryonic should be a portion of the life cycle just done after fertilization and continued via when the structure of the body is formed like tissues and organs.
The development of embryonic i.e. used for proof with respect to evolution should be related species that contain the same embroys.The similarities during the embryo stage of development among different animals are due to the expression of ancient genes.
These ancient genes have the same evolutionary origin, thereby they are homo-logous sequences. For example, fish embryos and human embryos express certain homo-logous genes in the embryos stage, thereby leading to the development of gill slit during this stage.
Therefore,Thus, option D is correct.
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HELPPPPPPP!!!!!!
An interglacial is a period of time that occurs between Ice Ages. During previous interglacials, the CO2 levels in the atmosphere were about 300 parts per million (ppm). In 2013, they were approximately 420 ppm. Rounding to the nearest percent, what is the percent increase in CO2 between these two time periods?
Answer:
40% increase
Explanation:
Percentage Increase Formula:
Percentage Increase=[(Final Value−Starting Value)/|Starting Value|] ×100%
To Calculate Percentage Increase:
1) Subtract final value (later value) minus starting value (initial value)
2) Divide that amount by the absolute value of the starting value (initial value)
3) Multiply by 100 to get percent increase
Keep in mind: If the percentage is negative, it means there was a decrease and not an increase.
So for your problem,
[(420-300)/300]*100% = 40% increase
5 PLZ HELP 12points+
Select the correct answer.
If the population of rabbits in this ecosystem decreased dramatically because of certain environmental changes, which organisms’ food supply would decrease?
A.
owl and snake
B.
jackal and wildcat
C.
green plant and mouse
D.
goat and wildcat
Answer: B, the jackal and wildcat
The Immune System is built on millions of cells called
Answer:
White blood cells: lymphocytes, neutrophils, and monocytes
Explanation:
Lymphocytes are processed in the bone marrow and then migrate to the lymphoid organs. The cells of the immune system are white blood cells: lymphocytes, neutrophils, and monocytes.
The immune system comprises of many biological structures and processes within an organism that provides resistance to infection and toxins.
Which functions are aided by swimmerets in crustaceans? Check all that apply. attachment to host gas exchange prey capture reproduction swimming
Answer:
b,d,e
Explanation:
I took the assignment.
The functions that are aided by swimmerets in crustaceans are gas exchange, reproduction, and swimming.
What do you mean by Crustaceans?Crustaceans may be defined as any of a large group of mostly water animals, that have tough outer shells, two pairs of antennae, and limbs that are jointed.
Crustaceans are organisms that belong to aquatic habitats where play performs their functional role and increase their survival rate effectively.
Therefore, the functions that are aided by swimmerets in crustaceans are gas exchange, reproduction, and swimming.
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what is the change in size of a group of organisms of the same species over time
A) population growth
B) death rate
C) birth rate
D) immigration and emigration
which bone layer holds calcium and other minerals
Answer:
In addition to its mechanical functions, the bone is a reservoir for minerals (a "metabolic" function). The bone stores 99% of the body's calcium and 85% of the phosphorus. It is very important to keep the blood level of calcium within a narrow range. If blood calcium gets too high or too low, the muscles and nerves will not function. In times of need, for example, during pregnancy, calcium can be removed from the bones. This process is carefully regulated by hormones and is discussed more completely in the section about hormones.
Explanation:
Answer:
its the um (dont quote me ) phophorus im pretty sure
Explanation:
Help.. 14 _____ are substances that can cause cancer.
15
Scientists join cancer cells with antibody-producing white blood
cells to produce _____.
Answer:
14. Carcinogenic
15. Not sure. I believe it is monoclonal antibodies.
The high temperature on Friday was 8 degrees above zero. The low temperature was 3 degrees below zero. Which expression gives the average of the low and high temperatures?
a
Left-bracket negative 3 + (negative 8) right-bracket divided by (2) Right-bracket
b
(negative 3 + 8) divided by 2
c
(negative 3 + 8) divided by (negative 2)
d
Negative (3 + 8) divided by 2
Answer:
B
Explanation:
The negative goes by the 3 because it is 3 degrees below zero. To find averages, you add the numbers and divide by how many numbers there are. in this case, it would be (-3+8)/2
During photosynthesis blank energy is converted into blank energy
Answer:During photosynthesis solar energy is converted into chemical energy
Explanation:
Put the steps of the carbon cycle in order using Step 1 as your starting point. Step 1: Carbon dioxide is
taken in by plants during photosynthesis.
The cycle repeats when the carbon stored in the atmosphere as carbon dioxide gas is
taken in
The animal releases the carbon dioxide back into the atmosphere during respiration.
The animal eats a plant and uses its carbohydrates for energy.
DONE
Answer:
step four
step three
step two
Explanation:
How do I compare and contrast these?
Select the correct answer.
Which of the following is the correct definition of a biography?
OA
an account of a fictitious experience that relies on figurative language
B.
an account of a single significant experience in a person's life
C.
an account of somebody's life written by that person
D.
an account of somebody's life written or produced by another person
Reset
Next
Answer:
D.
an account of somebody's life written or produced by another person
which of the four DNA strands match the strand in the diagram by base pairing ?
Answer: I believe the answer you're looking for is Adenine goes with Thymine and Cystosine goes with Guanine.
Hope this helps!!
The four DNA strands that match the strand in the diagram by base pairing is GGTGACT. The correct option is A.
What is base pairing?A base pair, which consists of two nucleobases joined by hydrogen bonds, is the basic building block of double-stranded nucleic acids.
They contribute to the folded shape of both DNA and RNA and serve as the building blocks of the DNA double helix.
base pair of DNA. The nitrogen-containing bases adenine (A), thymine (T), and cytosine (C), as well as guanine (G), couple together under normal conditions.
The structure of DNA is created by the binding of these base pairs.
In the given sequence, CCACTGA the base pairing can be done as GGTGACT.
Thus, the correct option is A.
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Your question seems incomplete, the missing image is:
The messages that scientists are sending into space are directed at intelligent alien life. Do
you think this is limiting? How could this affect scientists search for life beyond Earth?
Answer:
I think there is life beyond earth. Actually there most definently is. I think in a way it could be limiting. It's the fcat that the ones out there may not even be able to receive the message as fast as we please. Who knows, it could be years, decades, maybe centuries before they make actual contact with us. Then again, maybe they already have. But, the way this could affect the study is the fact that (I doubt it) but maybe a message could be sent the wrong way, or they misinterpret it. That's the only think I can get off. Anyway, this can also depend on how much funding is going into space. This also brings up the question, "How much do we know about our own planet?
What is displacement of metals?
A. 25%
B. 50%
C. 75%
D. 100%
What is respiration?
Answer:
B r e a t h i n g
EXPLAINATION????:
A process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances.
Answer:
Another word for taking a breath.
Explanation:
The term chemicals in this diagram represents
A. Starch molecules
B. DNA molecules
C. Hormone molecules
D. Receptor molecules
Answer:
C. hormone molecules
Explanation:
hormones are secreted in glands and are transported to the organs where they affect it and cause changes.
Where is DNA located in your body?
Answer:
DNA is in the nucleus of nearly every cell in your body.
Explanation:
DNA is housed in the nucleus because it is the genetic material and needs to be protected.
Answer:
The DNA is located in the nucleus.
Explanation:
Humans and animals are EUKARYOTES which means we have a nucleus, where the DNA is stored. PROKARYOTES do not have a nucleus to the DNA is stored in the cytoplasm.
~Anna
The movement of soil from one place to another place is called? ANSWER: GLACIATION, DEPLETION, or EROSION
Answer:
¿cual es la influencia que tiene la
2. What are the two types of ecological succession?
Answer:
There are two main types of succession, primary and secondary. Primary succession is the series of community changes which occur on an entirely new habitat which has never been colonized before. For example, a newly quarried rock face or sand dunes.
Explanation:
Answer:
Ecological succession is a process of change in ecosystems that takes place over time, and that we can observe both in time and in space. ... There are two types, the primary sequence and the secondary sequence.
"I hope it helps you it was a pleasure to help you".
Explanation:
1. Why is the bird on the right more likely to pass on its genes than the bird on the left?
2. Why would some variations/traits be passed on to the next generation and some seem to disappear over time?
3. What type of adaptation/traits do you think would be good to pass on to your children?
Answer:
1because it has a bigger and larger beak
2because of the development of the technology, genes change overtime and more now because of the global warming
3somewhere natural,traits:values,justice,self defense,to take care of the environment, etc
Arrange the tiles to show the sequence of events in the development of the theory of evolution.
Scientists examined evolutionary
relationships using DNA sequencing.
Scientists collected fossils that
showed species changing over time.
Mendel proposed laws for
how traits are inherited.
Darwin collected specimens
from around the world
during the HMS Beagle voyage.
Darwin proposed the theory of
evolution by natural selection.
Answer:
Explanation:
Here is the summary;
In 1817 his father collected later, in1828 Alexandre Brongniart's son (Scientists) collected fossils that showed species changing over time.
Between 1831–36 Darwin collected specimens from around the world during the HMS Beagle voyage
In 1859 Darwin proposed the theory of evolution by natural selection
Between (1856-1863), published in 1865 Mendel proposed laws for how traits are inherited.
Scientists examined evolutionary relationships using DNA sequencing.
how is a food web different from a food chain
A. Food webs contains only producers not consumers
B. Food webs do not include decomposers
C. Food webs exist in aquatic environments food chains exist in terrestrial environments
D. Food webs contain many different linked food chains
Answer:
D. Food webs contain many different linked food chains
Explanation:
