Answer:
There is no need for a special circulatory system as a human has because the flatworm doesn't breathe with lungs and doesn't need to transport oxygen around its body. The flatworm simply diffuses oxygen via its skin. This occurs wherever it may need the oxygen.
Explanation:
The study of fossils is called Paleontology
True
False
Answer:
True
Explanation:
The answer is fact checked
Which of the following results when homologous chromosomes cross over in meiosis?
Two sister chromatids get tangled, resulting in one re-sequencing its DNA.
DNA repair machinery alters maternal alleles so they match paternal ones
Two sister chromatids exchange identical pieces of DNA.
Corresponding segments of non-sister chromatids are exchanged.
When homologous chromosomes cross over in the process of meiosis, the corresponding segments of the non-sister chromatids are exchanged. Thus, the correct option is D.
What is Crossing over?
Meiosis is the process of cell division in which the chromosomal content of the cell reduces to half. This division is also known as reductional division. Meiosis is divided into two parts: Meiosis I and Meiosis II.
Meiosis I is divided into four phases which are Prophase I, Metaphase I, Anaphase I, and Telophase I. Prophase I is further divided into five stages which are Leptotene, Zygotene, Pachytene, Diplotene, and Diakinesis. Crossing over of chromosomes takes place during pachytene stage.
Crossing over or the chromosomal crossover is the exchange of the genetic material during the process of sexual reproduction between the two homologous chromosomes' non-sister chromatids which results into the formation of recombinant chromosomes.
Therefore, the correct option is D.
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Which of the following is an example of bioremediation?
a .using microorganisms to clean up an oil spill
b. using bacteria to make yogurt.
c. creating plants that are resistant to bacteria.
d. adding nitrogen-fixing bacteria to the soil before planting crops
Answer:
A: Using microorganisms to clean up an oil spill.
Explanation:
Bioremediation is a subcategory under biotechnology which alters environmental conditions with the usage of living organisms. It's a process that focuses on breaking down contaminants - making it an effective method to clean up oil spills due to its efficiency and affordability compared to other options.
·Why does it make sense that blood flow varies throughout different organs
It is important that blood flow varies throughout different organs because of differences in the metabolic activities of the different organs.
What is the circulatory system?The circulatory system refers to the system of organs and tissues which are involved in the circulation of blood around the body.
The circulatory system performs the essential function of delivering nutrients to tissues and cells as well as removing metabolic waste from them.
Since the different organs in the body perform specialized functions, some organs are actively involved in metabolic activities, therefore need greater blood flow.
Therefore, blood flow varies throughout different organs because of differences in their metabolic activities.
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Which of the following does a graph not do?
It shows a visual display of a relationship
.It can display different relationships with different graphs
.It always shows dots in a random order.
It displays linear relationships with a straight line.
Answer:
It always shows dots in a random order.
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The author probably wrote this Article in order to
Answer:
c
Explanation:
it's the one that is most likely
Fathers can only pass X-linked traits to their _[blank1]_, while mothers can pass X- linked traits to their _[blank2]_. What option correctly completes this sentence. daughters; daughters only daughters; daughters only sons; sons and daughters sons; sons and daughters daughters; sons and daughters daughters; sons and daughters sons; sons only
Males only have X chromosomes and only pass to their daughters
Explanation:
the ___ division of the nervous system tends to prepare the body for flight or fight.
Answer:
sympathetic
Explanation:
PLEASE MARK ME AS BRAINLIEST AND HAVE A NICE DAY :)
3
Which of the following statements are true? Choose more than one
answer.
Oxygen is the most abundant gas in Earth's atmosphere
Gases in the stratosphere protect living organisms from solar
radiation
Wavelength affects the color of light
Gases are thicker in the upper levels of the atmosphere
Not all wavelengths of light are scattered by atmospheric
gases
Earth's atmosphere absorbs blue light most efficiently
Answer:
Oxygen is the most abundant gas in Earth's atmosphere
Oxygen is the most abundant gas in Earth's atmosphere
Oxygen is the most abundant gas in Earth's atmosphere
Oxygen is the most abundant gas in Earth's atmosphere
Oxygen is the most abundant gas in Earth's atmosphere
Explanation:wfnwkfnskfnds
Oxygen is the most abundant gas in Earth's atmosphere
Oxygen is the most abundant gas in Earth's atmosphere
Oxygen is the most abundant gas in Earth's atmosphere
Oxygen is the most abundant gas in Earth's atmosphere
Oxygen is the most abundant gas in Earth's atmosphere
Oxygen is the most abundant gas in Earth's atmosphere
Oxygen is the most abundant gas in Earth's atmosphere
Why are organisms classified into different kingdoms? I don't want how they are classified, I just want why they are.
Living things are placed into certain kingdoms based on how they obtain their food, the types of cells that make up their body, and the number of cells they contain. Phylum is the next level following kingdom in the classification of living things.
Answer:
their classified because they have different structures.
you wouldn't want to put a goat in the same group as a insect would you?
Explanation:
VIDA chart for biology
Answer:
Yes you are right I didn't get the question too.
In the early stages of development all animals begin as what?
What is meant by wildlife? How is wildlife important for us?
Answer:
Animals that grow or live in the wild without any human interference are known as wildlife. Importance of wildlife is as follows: Wildlife helps keep the food chain in place and thereby maintain ecological stability.
Explanation:
The term "wildlife" refers to all living organisms that exist in their natural habitat, without any human interference. It includes animals, birds, plants, and other organisms that thrive in forests, oceans, deserts, and other natural environments.
Wildlife is important to us in several ways:
1. Biodiversity: Wildlife plays a crucial role in maintaining biodiversity. Each species contributes to the intricate web of life, and the loss of even one species can have a significant impact on the entire ecosystem. For example, bees play a vital role in pollination, which is essential for the reproduction of many plant species.
2. Environmental balance: Wildlife helps to maintain a balance in ecosystems. Predators, such as lions or wolves, help control the population of herbivores, preventing overgrazing and maintaining the health of vegetation. This balance ensures that resources are distributed appropriately and prevents the dominance of a single species.
3. Ecosystem services: Wildlife provides various ecosystem services that benefit humans. Forests, for instance, serve as a habitat for countless species, help regulate climate, filter air and water, and provide resources like timber and medicinal plants. Wetlands act as natural filters, purifying water and reducing the risk of floods.
4. Cultural and recreational value: Wildlife also holds significant cultural and recreational value. Many communities have strong cultural connections to specific wildlife species, and these species may play important roles in their traditions, rituals, and beliefs. Additionally, observing and interacting with wildlife through activities such as bird-watching or safaris can bring joy and a sense of connection to nature.
5. Scientific and educational purposes: Studying wildlife helps us gain knowledge about different species, their behavior, and their roles within ecosystems. This understanding is crucial for conservation efforts and managing natural resources sustainably. Wildlife education also fosters a sense of environmental awareness and encourages people to become responsible stewards of the planet.
Hence, wildlife encompasses the diverse range of organisms found in their natural habitats. Its importance lies in its contribution to biodiversity, environmental balance, ecosystem services, cultural value, recreational opportunities, and scientific knowledge. Preserving and protecting wildlife is essential for the well-being of both the natural world and human society.
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What that determines if a cell is eukaryotic. *
Sally made a diagram to show one way that Earth's systems interact near a volcano
1. Identify the process that sally is moldering in her diagram
2. Explain how the individual parts shown in the model come together to form a cycle
The process that Sally is modeling in her diagram is the "Role of Volcanoes in the Earth's Systems". This particular system is called "the Cycle of Rock and Soil formation"
How do the individual parts of the model form the cycle?The cycle of soil formation starts with the production of molten magma by the volcano.
The magma solidifies and cools, then they are transported, deposited and go through lithification.
After lithification, they become sedimentary rocks, and then through exposure to pressure, they become metamorphic rocks.
Over the years, as more and more layers are deposited onto the metamorphic rocks, pressure and heat build up creating molten magma.
The magma creates igneous rocks which after many years may be produced again as molten magma through an active volcano.
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True or false? DNA is found in both prokaryotic and eukaryotic cells.
Answer: True
Answer:
True DNA is found in both
Explanation:
Hope this helps
where do the decomposers come in the food chain if the pyramid gose like
coyotes
rattlesnake
kangaroo rats
sagebrush
where do the decomposers fit and why
Answer:
Usually at the bottom
Explanation:
final link in food chain. they break down dead plants/animals and returns vital nutrients to soil
Which makes viral infections difficult to defeat?
• A. Macrophages work slowly.
•
B. The immune system must attack the body's own cells.
•
C. Viruses are attacked by a nonspecific immune response.
D. Viruses live outside of cells.
The statement 'the immune system must attack the body's own cells' makes viral infections difficult to defeat.
What is an infection?Infection is a type of harm that the organism suffers when pathogenic microorganisms and viruses enter the body.
Pathogenic microorganisms include, for example, bacteria, fungi, and virus entities.
These pathogenic microorganisms/entities have specific antigens which can be recognized by the immune system.
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Why is the enzyme telomerase important in some cells?.
Answer:
✒️ Answer:Abstract. Telomerase is the enzyme responsible for maintenance of the length of telomeres by addition of guanine-rich repetitive sequences. Telomerase activity is exhibited in gametes and stem and tumor cells.
Explanation:
#CarryOnLearning[tex]watch.some.anime[/tex]
True or false? Prokaryotic cells are significantly smaller then eukaryotic cells.
Answer: False
Answer: Cell Size. At 0.1–5.0 µm in diameter, prokaryotic cells are significantly smaller than eukaryotic cells, which have diameters ranging from 10–100 µm (Figure 3.7). The small size of prokaryotes allows ions and organic molecules that enter them to quickly spread to other parts of the cell.
Explanation:
Which object measures atmospheric pressure?
a ballast tank
a barometer
a thermometer
Answer:
A barometer
Explanation:
It is commonly used to measure atmospheric pressure
two paragraphs
explaining how carbon is
transferred within and
between organisms and the
environment.
Answer:
For example, in the food chain, plants move carbon from the atmosphere into the biosphere through photosynthesis. They use energy from the sun to chemically combine carbon dioxide with hydrogen and oxygen from water to create sugar molecules.
Describe: Carbon moves from living things to the atmosphere. Each time you exhale, you are releasing carbon dioxide gas (CO2) into the atmosphere. Animals and plants get rid of carbon dioxide gas through a process called respiration. Carbon dioxide is added to the atmosphere naturally when organisms respire or decompose (decay), carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossil fuels and forests and the production of cement. Organisms play an important role in the carbon cycle in the following ways: Plants absorb carbon from the environment in photosynthesis and return it in respiration. Animals obtain their carbon by eating plants; they release carbon in respiration.
Explanation:
What happens when a piece of DNA is missing?
A.)Genetic information is transmitted
B.)Genetic information is lost
C.)Genetic information is copied
D.)Genetic information is stored
Answer: Genetic information is lost. Genetic information is transmitted.
Explanation:
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Which research method would be most appropriate for investigating the relationship between the number of hours teenagers sleep and the amount of caffeine consumed on a daily basis?
Case study
Experiment
Laboratory observation
Naturalistic observation
Survey
Answer:
Survey
Explanation:
Because if you think about it carefully you really cant observe it. Your main goal is to compare them and with that we need a survey to get the data from both sides. Leaving us with the Survey
Which effect does deforestation have on the carbon cycle?
Answer:
Deforestation facilitates one part of the carbon cycle, increasing the CO2 in the atmosphere. It also prevents forests from absorbing any further carbon by destroying the trees. It, therefore, inhibits this aspect of the cycle and leads to increased levels of this greenhouse gas in the atmosphere.
Explanation:
What is black soil best for?
O constructing buildings
O having a wildlife environment
O having a desert environment
O farming land
Answer:
I believe the answer is farming
Answer:
having a wildlife environment
Explanation:
I took the test and this was the correct answer so your welcome
100 points i will give brainlist
Examine the graph below.
If the gross primary productivity of a salt marsh is 13,000 gC/m2/year, how much productivity is lost to cellular respiration? 1,750 gC/m2/year 11,250 gC/m2/year 13,000 gC/m2/year 14750 gC/m2/year
Answer:
Gross primary productivity, or GPP, is the rate at which solar energy is captured in sugar molecules during photosynthesis (energy captured per unit area per unit time). Producers such as plants use some of this energy for metabolism/cellular respiration and some for growth (building tissues).
Explanation:
Answer:
jtnull10
I just add another answer from another account to be able to give you brainlist
Explanation:
Cells need energy.Give reason?
Answer:
because cell is cell and it is cell
Answer:
Cells need energy to keep them alive. Processes such as cell division, Active transport, and protein synthesis all require energy.
Explanation:
Non-vascular plants rely on _______ to get water
A. Germination
B. Drinking
C. Diffusion
D. Pollination
Please respond ASAP!
Answer: C. Diffusion
Explanation:
Non-vascular plants use diffusion as they don't have vascular tissue to bring the water from the soil. Germination means to grow and pollination is for reproduction, so they don't relate.
Which Florida natural resource is renewable?
Oil
Coal
Wood
Limestone
Answer:
I think the answer is coal
Answer:
C: Wood
Explanation:
Wood can easily be renewed whereas with the others, they take thousands to millions of years to be renewed.