Answer:
D. It is a process of change during which species in a community are established or replaced
Explanation:
Ecological succession is a process that occurs when a community is being established or replaced.
It shows the change in community over time, focusing on the types of plants and the maturity of plants that are in the community.
Primary and secondary succession are the two types of succession. Primary succession shows the process of change in the establishment of a community. Secondary succession shows the change when a community is being replaced.
So, the correct answer is D. It is a process of change during which species in a community are established or replaced
Space exploration can lead to money going to U.S.
businesses and universities.
What are two things NASA might hire U.S. businesses and universities to do?
A. Teach people to read
B. Improve athletic teams
C. Build complex equipment
D. Research new ideas
Answer:
build complex equipment andddd research new ideas
Explanation:
hope this helps yall!!!
Answer:
C & D
Explanation:
Ap3x
How much time does it take to use 300 W of power to do 1800 J of work? Round your answer to the near
number.
SERE
The time is
S.
Answer:
the answer is 6 secs rounded to nearest ten is 10
Explanation:
hope it helps
In mouse, genes X, Y and Z are on chromosome 2. The map of genes X, Y and Z is:
X--------20mu--------Y---------------30mu---------Z.
You cross an individual with genotype XXYYZZ to an individual with genotype xxyyzz, and F1 progeny are collected. Assume interference between regions (X-Y and Y-Z) is 40%. You then perform a cross between an F1 individual and an individual with genotype xYz/xyz. Among 1000 progeny, how many of them will be of the genotype xxyyzz?
Answer:
36 individuals xxyyzz
Explanation:
Available data:
X-Y = 20MUY-Z = 30MUCross: XXYYZZ x xyyzzF1= XxYyZzI = 40%2nd Cross: XxYyZz x xxYyzzF2 = 1000 individualsWe need to know how many individuals from the F2 are going to be xxyyzz
xxyyzz genotype is the result of a double recombinant event.
First, we need to analyze the given information:
→ Distances between genes
The genetic distance result from multiplying the recombination frequency of each region by 100 and expressing it in map units (MU). So, if we have the genetic distance we can divide it by 100 and get the recombination frequency:
Let us say that region I is the distance between X and Y. And region II is the distance between Y and Z.
GD = genetic distance
RF = Recombination frequency
GD (X-Y) = RF x 10020MU = RF x 100
20MU/100 = RF
0.2 = RF (Region I)
GD (Y-Z) = RF x 10030MU = RF x 100
30MU/100 = RF
0.3 = RF (Region II)
Now we have the recombination frequency of Region I and Region II.
→ Interference
Knowing the interference value will let us know the value of the coefficient of coincidence, which will also lead us to the number of individuals xxyyzz.
I = 40%
I = 1 - CC ⇒ CC = coefficient of coincidence
Clearing this equation gives us the value of CC
CC = 1 - I
CC = 1 - 40% = 1 - 0.4
CC = 0.6
To calculate the coefficient of coincidence, CC, we can also use the next formula:
CC = observed double recombinant frequency/expected double recombinant frequency
Now, we are interested in knowing the value of the observed double recombinant frequency.
Note:
observed double recombinant frequency = total number of observed double recombinant individuals/total number of individuals expected double recombinant frequency = recombination frequency in region I x recombination frequency in region II.So, to get the value of the observed double recombinant frequency, first, we need to get the value of the expected double recombinant frequency. And we can do it because we already have the recombination frequencies in both regions.
expected double recombinant frequency = recombination frequency in region I x recombination frequency in region II
- Recombination Frequency - RI = 0.2
- Recombination Frequency - RII = 0.3
expected double recombinant frequency = 0.2 x 0.3
expected double recombinant frequency = 0.06 = EDRF
Now that we know the value of the CC and the expected DRF, we can get the observed double recombinant frequency.
CC = observed double recombinant frequency/expected double recombinant frequency
- CC = 0.6
- EDRF = 0.06
CC x expected double recombinant frequency = observed double recombinant frequency
0.6 x 0.06 = observed double recombinant frequency
0.036 = observed double recombinant frequency = ODRF
Finally, as this is a frequency, we need to multiply it by the total number of individuals in the F2 to get the number of observed double recombinant individuals.
- ODRF = 0.036
- N = 1000
Double recombinant individuals = 0.036 x 1000 = 36 individuals xxyyzz.
Choose the option that best matches the description given.
the study of the frequency, distribution, cause, and control of disorders in populations:
Answer:
Epidemiology
Explanation:
I just looked up the definition of epidemiology and the definition was the question, word for word. So like trust me, it's accurate.
Anyways, I hope this helps.
Unit 5 DQ 1 Debate on global warming The issue of global warming has become an unending debate. Which side of the debate are you in? Support your decision with one reference
Answer:
Global average temperatures have increased in evolving patterns in which cooler temperatures (shown in blues) have generally changed to warmer temperatures (shown in progressively intense reds).
If I have 14 guanine and 37 thymine, how many adenine will I have?
If I have 14 guanine and 37 thymine, then 37 adenine bases will be present in the individual.
What is base pairing?Base pairing is the process by which nitrogenous bases in DNA molecules bind to each other through hydrogen bonds to form the characteristic double-stranded structure of DNA.
Adenine (A) is always associated with thymine (T), and cytosine (C) is always associated with guanine (G).
As a result, knowing the number of guanine and thymine bases in a DNA sequence allows us to calculate the number of adenine and cytosine bases.
We know there are 37 adenine bases because adenine always pairs with thymine and you have 14 guanine bases and 37 thymine bases.
This is because the number of A bases in a double-stranded DNA molecule will always equal the number of T bases, and the number of G bases will always equal the number of C bases.
Thus, there will be 37 adenines.
For more details regarding base pairing, visit:
https://brainly.com/question/17254975
#SPJ3
N O 2) Select the best answer. What are three important minerals found in soil? O nitrogen, phosphorous, potassium O carbon, oxygen, calcium aluminum, lithium, magnesium copper, gold, silver
Answer:
Nitrogen, phosphorus, and potassium
Explanation:
Answer:
phosphorus, nitrogen and potassium
PLS HELP!! ASAP DUE TONIGHT!!
The saturated fats of animals differ from the unsaturated ones of plants. Unsaturated fats have
A. higher molecular weights.
B. more metabolic processes that they participate in.
C. nitrogen atoms in their structures.
D. a higher number of double bonds between carbon atoms in their structures.
E. more functional utility in animal species, particularly in marine life forms.
Answer:
D. a higher number of double bonds between carbon atoms in their structures.
Explanation:
Based on the graph, how are the trends in greenhouse gases between the years 1500 and 2000 likely to affect the climate on Earth?
Answer:
The atmosphere would retain more heat, raising global temperatures.
Explanation: got this correct!
Answer: The atmosphere would retain more heat, raising global temperatures.
Explanation:
Got it right on PLATO
Protein Synthesis and Codons Practice
DNA → T T C A A T G G T C T A G G G
RNA →
Amino Acids →
Answer:
RNA AAGUUACCAGAUCCC
Explanation:
Remember A codes for U
C for G
G for C
T for A
The amino acids will be for every codon (every three letters)
I don’t have a codon chart to translate at the moment but I hope this helps:)
Where would you be likely to find the alpine tundra biome?
a. the Russian north woods
b. central plains of the United States
c. the southern most tip of Australia
d. a mountain range in Europe
Answer:
The answer is D.
Explanation:
D- A mountain range in Europe
Alpine tundra is found on high-latitude landmasses, above the Arctic Circle like Russia, Greenland, Iceland, and Scandinavia. Thus option A is correct
What is alpine tundra?Alpine tundra is a type of ecosystem that occurs at high elevations characterized by colder temperatures, long winters, and growing seasons are shorter with no trees.
The Russian north woods have Treeless tundra and distinctive vegetation known as Beringian woodland, high mountain range, and long winter. so option A is correct.
Learn more about the tundra, here:
https://brainly.com/question/2018762
#SPJ5
why are minerals important for our body? describe the 2 groups of minerals
Minerals are needed for the proper composition of body fluids, including blood, and for the proper composition of tissues, bone, teeth, muscles and nerves. Minerals also play a significant role in maintaining healthy nerve function, the regulation of muscle tone, and supporting a healthy cardiovascular system. There are two kinds of minerals: macrominerals and trace minerals.
Explanation:
.
How does lateral gene transfer help explain the evolution of antibiotic resistance in bacteria?
Answer:
Lateral gene transfer allows the bacteria to develop resistance to antibiotics and spread it between bacterial populations. ... This process allows bacteria to transfer genes from one population into another. As a result, the next generation would evolve and develop defenses that would make them resistant to the drug.
Explanation:
Which natural events likely caused Earth's past mass extinctions?
Answer:
Its because of climate change, asteroid impacts, massive volcanic eruptions or a combination of these causes.
Explanation:
Rearrange them in the correct sequence.
Harvesting, Sowing, Manuring, Tilling and Ploughing, Irrigation, Weeding.
Plzz Help ASAP
plz ASAPPP
What is accomplished during meiosis 1
Answer: However, Meiosis I begins with one diploid cell and ends with two haploid cells, halving the number of chromosomes in each cell.
Explanation:
indicate FOUR
reasons why you think having it may enhance responsible living in your environment
Answer:
Can you please elaborate on ur question??
: d
3 Full sentences,
To what extent can we reverse the destruction of the natural world?
Answer:
Using too much water from lakes and rivers can affect animals’ habitat. Conserve this resource by taking five minute showers, turning off the faucet when you brush your teeth, and bugging your parents to fix leaky pipes.
Explanation:
Is bacteria prokaryotic or eukaryotic
why is it important to determine the manner/mechanism of death
I’ll mark u as brainliest!
Answer:
39 purple stemmed plants
39 green stemmed plants
Explanation:
You'll end up with half and half! :)
Which scientist devised tests that helped confirm that bacteria and other microorganisms cause a variety of diseases?
Robert Koch
Anton van Leeuwenhoek
Louis Pasteur
Alexander Fleming
Answer:
A. Robert Koch
Explanation:
I got a 100 on the pre-test (Edgen2021)
Robert Koch made tests that helped confirm that bacteria and other microorganisms cause a variety of diseases.
Who was Robert Koch?Robert Koch was a scientist that work to identify many pathogenic microorganisms (e.g., bacteria and fungi).
Nowadays, Robert Koch is considered the father of modern bacteriology. Robert Koch identified many pathogenic microorganisms including Mycobacterium tuberculosis (tuberculosis) and Vibrio cholera (cholera).In conclusion, Robert Koch made tests that helped confirm that bacteria and other microorganisms cause a variety of diseases.
Learn more about Robert Koch here:
https://brainly.com/question/1136589
difference between antigens and antibodies?
Answer:
Antigens are molecules capable of stimulating an immune response. Each antigen has distinct surface features, or epitopes, resulting in specific responses. Antibodies (immunoglobins) are Y-shaped proteins produced by B cells of the immune system in response to exposure to antigens.
Explanation:
Plz mark as Brainliest
hopes this helps
if all the bees in the hive come from the queen how are they related
I NEED AN ANSWER
Answer:
Aren't they brothers and sisters
Answer:
The queen had all made them, so theyre brothers and sisters.
what is the main difference between the plant cell and Animal cell
Answer:
PLANT CELLS HAVE A CELL WALL
Explanation:
THANK ME LATER
Answer:
Heyaa!! My Name Is Pinky and i'm here to inform you that you're answer is...
Explanation:
!!!! there are a few differences between plant and animal cells BUT!! one major difference is their structure, animals are enclosed by a cell membrane, but plant cells have a cell membrane and a cell wall to give them a more solid form another major difference is that plant cells have chloroplasts for photosynthesis whereas animal cells do not because they do not undergo photosynthesis !!!!
Have an amazing day!!!
~Pinky~
HELP ASAP
Which of the following is an example of homeostasis?
Q. During a time of high stress, Justin's heart races, his muscles tense, and he feels
sweat dripping down his forehead.
R. Sick with the flu, Alison's body temperature rises to fever levels.
S. Boris doesn't drink very much water one day. To compensate his kidneys remove less
fluid from his blood, and produce less urine than normal.
T. As Grace races up the ten flights of stairs to her apartment, the muscle cells in her
legs produce excess lactic acid, causing a burning sensation in her legs.
Answer:
The correct answer is Boris doesn't drink very much water one day. To compensate, his kidneys remove less fluid from his blood and produce less urine than normal
Hope this helps :)
Explanation:
question on picture for biology
Answer:
because doctors can determine your family's risk from your ariments
Explanation:
hope this helps
Answer:
First one I think
which organ is responsible for helping to keep the water concentration equal on each side of the cell membrane?
(please help I've been stuck on this for 2 days)
Answer:
solute membrane
Explanation:
Kidney is the main organ which is responsible for helping to keep the water concentration equal on each side of the cell membrane.
What is Kidney?The kidneys are the main organs in the body which remove waste products and extra water from the blood in the form of urine and also help to keep the chemicals such as sodium, potassium, and calcium balanced in the body. The kidneys also secrete hormones which help control blood pressure and stimulate bone marrow to make red blood cells.
Kidneys maintain water concentration in the body. Kidneys maintain homeostasis through osmosis. Osmosis is the phenomenon of movement of water or fluid particles from a region of higher concentration to a region of lower concentration through a semi-permeable membrane.
Learn more about Kidney here:
https://brainly.com/question/30595654
#SPJ6
How does the movie “The Martian” related to a biology concept?
Answer:
Because of the garden that the dude made on mars.
Explanation:
The dude grew plants from his crew's poop and made a little tent with airtight seals, and as he said, once you grow something, you colonize it.
Where would you collect
data during an
experiment?
Answer:
Recall that data can be collected in two main ways: (1) through sample surveys or (2) through designed experiments. While sample surveys lead to observational studies, designed experiments enable researchers to control variables, leading to additional conclusions.