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The ocean absorbs nitrogen gas from the atmosphere. In open-ocean areas with low concentrations of nutrients (“oligotrophic” regions), some of this nitrogen is taken up by microbes and transformed into various chemical compounds.
ThanksHope it helpsWhat is the hallmark of a chemical change?
Which of the following statements is true?
Energy from the sun is used by plants to make food.
The sun is made of mostly hydrogen and helium.
The sun is the most massive object in the solar system.
all of the above
Answer:
All of the above
Explanation:
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pleeeaaaseee helppp meeeee
Answer:
1. Fossils
2. Evolution
3. vestigial
4. analogous
5.Homologous
6.Embryology
Which group of organisms would Schleiden have been most likely to study?
Answer: flower, pine tree, or cactus.
Explanation:
Answer:
A: flower,pine tree,or cactus
Explanation:
Edge 2021
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Answer:
12. A
13. A
Explanation:
12. A chemical reaction occurs when something new is transformed and changed chemically. The other answer choices, B, C, and D are physical changes; nothing new is really being created.
13. When water is heated to become a gas, that term is called boiling. Hence the name, boiling point.
Please answer fast ASAP I give brainliest
How is light penetration likely to affect the distribution of plants in the lake ?
Explanation: In the open water zone (or photic zone) sunlight supports photosynthetic algae and the species that feed upon them. In the deep water zone, sunlight is not available and the food web is based on detritus entering from the littoral and photic zones.
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False
Question 10 (6.667 points)
What is the currently recognized classification scheme?
A) two-kingdom system
B) five-kingdom system
OC) biogeography
OD) three-domain system
The currently recognized classification scheme is the five - kingdom system.
The five kingdom classification involves the grouping of living organisms into classes such that organisms in each class share similar characteristics such as : reproductive process, homeostasis, growth, mode of nutrition, cell structure and so on.
The five kingdom classes include :
Kingdom Monera
Kingdom protista
Kingdom plantae
Kingdom Fungi
Kingdom Animalia.
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1. This question may be completed independently or as a group exercise. Biological anthropologists disagree about the best way to classify the robust australopithecines. Describe the two approaches to classifying these species. Which classification do you support
Answer:
Some researchers classify Australopithecines into gracile australopithecines and robust australopithecines, while others argue that differences are enough strong to classify robust australopithecines in their own genus called 'Paranthropus'. In my opinion, it seems reasonable to obtain more fossil data in order to support this division
Explanation:
The term Australopithecines comes from the genus Australopithecus, which are the closest known relatives of our genus Homo, and arose around three (3) million years ago. Australopithecines can be classified into two major groups called gracile australopithecines and robust australopithecines. However, robust australopithecines have also been classified in their own genus, Paranthropus, in order to distinguish them from the gracile australopithecines. The major differences between gracile and robust species are associated with facial and cranial features. Paranthropus species had a large sagittal crest, enormous cheek teeth, robust jaws, and strong jaw muscles (suggesting they were herbivores that ate tough food). However, these main features may not be conclusive evidence that supports the separation of Paranthropus in its own clade, thereby in my opinion it should be reasonable to wait until more fossils are found in order to correctly classify Paranthropus species as a different group.
The Pine Tree shown below is a common gymnosperm. Name three adaptations this tree has that allow it to live on land
A waxy cuticle that covers the outer surface of the plant and prevents drying out through evaporation. The cuticle also partially protects against radiation damage from UV light.
Stomata (singular: stoma) are present in all land plant lineages except liverworts (similar to -but not the same as! – mosses). Stomata are pores or holes which allow for exchange of gasses (such as oxygen and carbon dioxide) between the plant cells and the environment. Stomata or similar structures are necessary in land plants because the waxy cuticle blocks free-flow of gasses.
Roots (or root-like structures) anchor plants to the soil and—in plants with true roots— serve as conduits for water absorption. All land plants except Bryophytes (mosses, liverworts, and hornworts) have true roots. Bryophytes have root-like structures called rhizoids that anchor them to their substrate but are not involved in water absorption (which is less important for Bryophytes because they can only survive in very moist environments).
Mutualistic association with mycorrhizal fungi, which are tightly associated with plant roots. Mychorrhizal fungi are associated with approximately 80% of all land plant species and provide additional surface area for absorption of both water and nutrients from the soil. The fungi share these resources with the plant roots, and—in exchange— the plant shares photosynthetic sugar products with the fungi.
The alternation of generations life cycle, which includes both a multicellular haploid stage and a multicellular diploid stage. Why is this an adaptation to life on land? It isn’t, in and of itself—in fact, it also occurs in *some* green algae, which are aquatic but share a common ancestor with all land plants. But specific adaptations to the alternation of generations life cycle have occurred in different lineages of plants, and those adaptations DO function as adaptations to life on land. We’ll consider these adaptations later in this reading.
These are from my text book, from last year.
Answer:
It has cuticle, a waxy, airtight seal that covers plants and allows them to retain water.
It has seeds, plant embryos without a protective cover on the scales of a cone which allows them to disperse into new locations.
It has pollen, but it is not produced in flowers, which allows it to reproduce without the need of water.
Explanation:
Freshwater plants that have adapted to very moist conditions live in which type of biome?
an estuary
coral reefs
the ocean
a wetland
Answer:
A wetland
Explanation:
All the others are salt water
Answer:
wetland
Explanation:
Describe the levels of organization found in your neighborhood from the smallest level of organization to the largest.
Answer:tissue
Explanation:
Tissues are groups of cells that have a similar structure and act together to perform a specific function. The word tissue comes from a form of an old French verb meaning “to weave”. ... Groups of tissues make up organs in the body such as the brain and heart.
which two types of natural resources are required to make bottled water?
A. metals
B. fossil fuels
C. living things
D. freshwater
Answer:
B. fossil fuels
A. metals
Explanation:
Answer:
Fossil fuels and Freshwater
Explanation:
took the test
Name the type of energy lost by the water
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16. should be B) Chemical Properties of Water.
Because those are all examples of chemical changes of water.
17. should be B) The liquid will remain a liquid.
Because 52° C is the same as 125.6° F.
Freshwater ecosystems can be grouped as those that are still, those that are flowing, and those that contain salt. (True or False)
Answer:
true
Explanation:
During meiosis, homologous chromosomes exchange genetic material during a process
called crossing-over. This exchange of genetic material -
A. Reduces the diploid number to the haploid number
B. Increases the genetic variation
C. Reduces the probability of mutations
D. Increases the haploid number to the diploid number
Answer:
B. Increases the genetic variation
Explanation:
Which of the following statements about yeasts are true?
1) Yeasts are fungi
2) Yeasts can form pseudohyphae
3) Yeasts reproduce asexually by budding
4) Yeasts are facultatively anaerobic
5) All yeasts are pathogenic
6) All yeasts are dimorphic
Select the option below that contains the numbers referring to true statements.
NO LINKS!!!
Answer:
Yeasts are fungi, that is the answer
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.
Help is needed please
Answer:
Genotypes are listed in the right column of the table, while phenotypes are on the left.
There are more genotypes than phenotypes for blood types because multiple genotypes that can result in 1 phenotype
7. Which of the following determines how quickly nutrients are absorbed? *
A. The cell's attitude
B. The cell's ribosomes
C. The cell's surface area/volume ratio
D. The cell's DNA
what are the components of the atmosphere that help organisms live on earth?
EXPLAIN and I will make you brainliest!!!
Answer: Atmospheric gases, especially carbon dioxide (CO2) and oxygen (O2), are extremely important for living organisms. Carbon dioxide and oxygen are the gases in the atmosphere that are needed for life. Plants need carbon dioxide for photosynthesis. They use sunlight to change carbon dioxide and water into food. The process releases oxygen
Explanation:
Cómo es posible enviar sin cables mensajes o imágenes de un
celular a otro
Question 5
How do increases in the carrying capacity of Earth for people affect the carrying capacity of Earth for other species?
Select one:
It increases for most species.
It decreases for all species.
It decreases for most species.
It increases for all species.
Answer:
It increases for most species.
From this diagram of fossils (sorry it’s a bit blurry) which layer is the youngest and which layer is the oldest? How do you know?
Answer:
The bottom layer is the oldest, and the top layer is the youngest
Explanation:
As time goes on more and more sediment gets piled onto a certain place, meaning the oldest fossils will keep getting deeper and deeper
CURRENTLY ON A POST TEST: 50 POINTS
Recently a local government has observed that the number of people suffering from respiratory diseases has increased. What measures can the local government take in order to reduce health risks?
A. force everyone to stop using cars
B. shut down all the factories
C. reduce public transport facilities
D. ban carpooling systems
E. implement standards on the smoke emissions from factories
this is supposed to be environmental science, but there isnt even an option for science so im going to put it as Biology
Answer:
For more than forty-five years the Clean Air Act has cut pollution as the U.S. ... New cars, trucks, and nonroad engines use state-of-the-art emission control technologies. ... EPA has taken initial steps to limit emissions that cause climate change and ... This progress reflects efforts by state, local and tribal governments; EPA; ...
Explanation:
Answer:
E. implement standards on the smoke emissions from factories
Explanation:
I hope this helps you! ☺️
I WILL GIVE BRAINLIEST AND EVERYTHING IF YOU HELP ME
In order to go through Mitosis, DNA is packaged into structures known as what.
a
Enzymes
b
Chromosomes
c
Double Helix strands
d
Nucleic Strands
Answer:
b:chromosomes
Explanation:
hope you get it
what is the main difference between the plant cell and Animal cell
Answer:
PLANT CELLS HAVE A CELL WALL
Explanation:
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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~
Is bacteria prokaryotic or eukaryotic
True or False? The skills and characteristics needed for a high-quality friendship are the same skills and characteristics needed in a committed long-term relationship or marriage.
Which of the following is not a type of fossil fuel?
petroleum
nuclear energy
coal
natural gas
Answer: Nuclear energy
Explanation:
Answer:
I say the answer nuclear energy!!
Explanation:
Nuclear energy is not a fossil fuel!!