8. Fish make use of _______ exchange in their gills. a. cross-current b. concurrent c. cocurrent d. countercurrent

Answers

Answer 1

Answer:

Countercurrent

Explanation:

I think it's the answer

Answer 2

Answer:

d. countercurrent

Explanation:

im pretty sure this the answer so i hope this helps bro/broette bye


Related Questions

what does thermohaline circulation have in common with coastal upwelling

Answers

Answer:

Coastal upwelling is the process by which strong winds blow down the coasts of continents and, in conjunction with the earth's rotation, cause the surface waters to be pushed offshore. Water from the ocean depths is then pulled up - or upwelled - to the surface to take its place

BEST ANSWER GETS BRAINLIEST

What is a polar molecule?

Answers

Answer:

a polar molecule is a molecule that has a charge on one side of the molecule, that is not cancelled out.

Explanation:

i hope this helps you!

Answer: a molecule that has both positive and negative ions

Explanation: a water molecule has an oxygen element and 2 hydrogen elements the oxygen is a negative ion and the hydrogen ions are positive

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Answers

Answer:

ddddddddddddddddddd

Explanation:

ddddddddddddddddddddddddddddddddddddddd

dddddddddddddddddddddddddddddddddddddd

ddddddddddddddddddddddddddddddddddddddd

dddddddddddloldddddddddddddddddddddddddd

which important event in meiosis occurs during prophase?

Answers

Answer:

Crossing over

Explanation:

for variations which is one of the most important characteristic for Meosis

ill give brainlietst and 50 points
Drag each tile to the correct location on the chart.
Determine whether each statement describes mitosis, meiosis, or both mitosis and meiosis.

Answers

Answer:

DNA replicates in both mitosis and meiosis, Mitosis occurs during growth and development, In meiosis the number of chromosomes reduce by half, Mitosis occurs in all organisms, Meiosis occurs in organisms that sexually reproduce, and chromosomes stay the same in Mitosis.

Explanation:

Mitosis: Occurs during growth and development, Occurs in all organisms, and The number of chromosomes remains the same

Meosis: The number of chromosomes reduces by half, and Occurs in organisms that sexually reproduce

Both: The DNA is replicated.

1. The DNA is replicated: Both Mitosis and Meiosis. In both processes, DNA replication occurs before the division of cells, ensuring that each daughter cell receives a complete set of genetic information.

2. Occurs during growth and development: Mitosis is the process responsible for the growth, repair, and development of multicellular organisms by producing identical daughter cells.

3. The number of chromosomes reduces by half: Meiosis involves two divisions that result in the reduction of chromosome number by half, leading to the formation of gametes (sperm and egg cells) with half the usual number of chromosomes.

4. Occurs in all organisms: Mitosis is a fundamental process occurring in various organisms, ranging from unicellular to multicellular, for growth, tissue maintenance, and asexual reproduction.

5. The number of chromosomes remains the same: In mitosis, the daughter cells have the same number of chromosomes as the parent cell, maintaining the chromosome count.

6. Occurs in organisms that sexually reproduce: Meiosis is specific to organisms that reproduce sexually, as it produces genetically diverse gametes that contribute to the variability of offspring.

Know more about chromosomes:

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#SPJ3

Oxygen is made during photosynthesis. (True or False)

Answers

Answer:

True

Explanation:

True

Ans: True
Explanation: oxygen is produced as a by-product during photosynthesis

is the bladderwrack ficus gardneri endangered?

Marine Bio.

Answers

Answer: Chromista

Explanation:

The separation of the colors occurs because each different ____ of light ______, or bends a different amount

A frequency, wavelength
B wavelength, reflects
C wavelength, refracts

Answers

Answer: C

Explanation: Makes the most sense bc refraction is the bending of light

Water is warmed by the sun and cooled by night . It is then cooled and _____

Answers

Answer:

Frozen

Explanation:

When it heats up water evaporates and when it's cold it does the opposite, it freezes because of the low temperature.

The answer would be that it’s frozen

How many chromosomes will there be in a human zygote?

Answers

Answer:

46

Explanation:

During fertilization, gametes from the sperm combine with gametes from the egg to form a zygote. The zygote contains two sets of 23 chromosomes, for the required 46. Most women are 46XX and most men are 46XY, according to the World Health Organization.

The controls the materials that enter and
leave the cell.

Answers

Cell membrane is the answe

An organism's genotype is (1 point)

Answers

Answer:

an organism's complete set of genes.

Explanation:

Nohxjxjxjjxjxjxjjxjdkd

Answers

Answer:

yes

Explanation:

Answer:
Yes
Explanation:

people who have come back from being legally declared dead. what was your experience

Answers

my friend told me that one his friend uncles was in a car crash not in a bad one but it did send his uncle flying it hit his head and there was alot of blood people thought he was dead but after like a few hours in the doctor he just opened his eyes but still couldnt move

which zone in the ocean contains enough light for photosynthesis?

Answers

Answer:

The euphotic zone

The euphotic zone is the layer closer to the surface that receives enough light for photosynthesis to occur.

Please select the word from the list that best fits the definition

Preserved animal tracks are called ______ fossils.

Answers

Answer:

A Trace Fossil

Explanation:

Mark as Brainliest Answet

Trace fossils

Trace fossils include footprints, trails, burrows, feeding marks, and resting marks. Trace fossils provide information about the organism that is not revealed by body fossils.

HELP PLS!!!!!!!!!!!!
Beaches are monitored to protect public health. Waterborne pathogens can cause illnesses. Which of the following is not a common type of pathogen at the beach?

Bacteria
Protozoa
Viruses
Worms

Answers

ALL these microorganisms can represent common types of pathogens at the beach. In consequence, it is imperative to take precaution measures to avoid infections.

The sand at the beach may contain dog feces, which is known to transport Toxocara canis, a parasite roundworm able to infect humans.

Moreover, samples of beach sand may also contain different types of pathogenic bacteria (e.g., Staphylococcus species, E. coli, Enterobacteriacea, etc) and viruses (e.g., enteroviruses, hepatitis A, Norwalk viruses, reoviruses, rotaviruses, etc).

In consequence, it is imperative to wash hands with soap and water when touching beach sand that is suspected to be contaminated.

Finally, marine water may also be contaminated with different zoonotic protozoa such as, among others, Giardia, Cryptosporidium and Toxoplasma.

Learn more in:

https://brainly.com/question/1542536

Answer:

The correct answer is worms.

Explanation:

Yes, all of these can be found at the beach, but worms are not common. Also, I took the test lol!

What best explains the relationship between photosynthesis
Оа
The higher the rate of formation of products in respiration, the lower the rate of photosynthesis.
Photosynthesis depends on the carbon dioxide released during cellular respiration.
Ob
О с
C
Cellular respiration depends on the water released during photosynthesis.
C
They have the same set of product molecules,

Answers

Answer:

 I think it's the last one! "They have the same set of product molecules"

Explanation:

Photosynthesis removes carbon dioxide from the atmosphere, and cellular respiration puts it back. Photosynthesis releases oxygen into the atmosphere, and cellular respiration uses that oxygen to release energy from food.

How long do scientists estimate that the sea has been at its current level?
250 years
2,500 years
25,000 years
250,000 years

Answers

Answer:

250,000

Explanation:

Answer:

A. 250 years

Explanation:

NASA measures sea level around the globe using satellites. The Jason-3 satellite uses radio waves and other instruments to measure the height of the ocean's surface – also known as sea level. It does this for the entire Earth every 10 days, studying how global sea level is changing over time.

Suppose two leaf-eating species of animals live in a habitat where there is a severe drought and many plants die as a result. Which term describes the kind of relationship the two species probably will have?.

Answers

Competition is the kind of relationship these two leaf eating species of

animals will have.

Competition involves organisms vying for resources such as food, sunlight,

space etc in the ecosystem. The two leaf eating animal species are in

competition with each other for plant leaves.

When drought occurs and the leaves reduces, competition for food

increases in which the fittest survive and the less fit ones die from starvation.

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please help :( How are the steps of cellular respiration different when it is anaerobic respiration?

Answers

Answer: HEYYYY also if I’m correct anaerobic respiration doesn’t need oxygen maybe I’m wrong id.k

Explanation:

Explain the correlation between solar radiation and kelp biomass .

Answers

Answer:

icicles icicles icon DM irks an ignitor

what solution, (hypertonic, hypotonic, isotonic) would make osmosis go faster?

Answers

Answer:

Explanation:

Osmosis is the movement of WATER molecules across a semipermeable membrane (such as the cell membrane) from where there is a high concentration of water to where there is a low concentration of water. The interior of a living cell consists of cytoplasm, which is a solution of mostly water with dissolved substances such as salt.  

Now for the fun stuff!  An Isotonic solution is a solution that has the same concentration of dissolved substances as is found inside the cell.  If a cell is surrounded by isotonic solution, then there is no net movement of water across the membrane by osmosis, because the concentration of water is the same on both sides of the membrane.

A hypertonic solution is a solution with a higher concentration of dissolved substances than is found inside the cell.  If a cell is surrounded by hypertonic solution, then water will move OUT of the cell by osmosis because there is a higher concentration of water inside the cell compared to outside (where there is lots of dissolved salt, etc.)  A cell in hypertonic solution will shrink.  

A hypotonic solution is a solution with a lower concentration of dissolved substances than is found inside the cell.  If a cell is surrounded by hypotonic solution, then water will move INTO the cell by osmosis because there is a higher concentration of water outside the cell compared to inside.  A cell in hypotonic solution will swell up and, if there is no cell wall, may burst.  A silly but simple way to remember that water moves into a cell in hypotonic solution is that "hypo causes the cell to swell up like a hippo"

Sucrose is an organic compound made by plants for quick energy.

What type of organic compound is sucrose?

protein
carbohydrate
lipid
nucleic acid

Answers

Answer:

it's a carbohydrate

Explanation:

Sucrose (which is known as a table sugar) is a very common disaccharide, which is made up of the monomers glucose and fructose.

Given the following strand of DNA, what is the complementary (second) strand of DNA?

CGT-GAT-CAG

Answers

Answer:

If i remeber correctly it would be CAG or CGT

Explanation:

Can someone help me with my living earth homework

Answers

I was debating this question for the longest time and I came up with a conclusion.



No

Below is an image of a family tree (first generation) showing a group of mice. A dark gray mouse and a white mouse had four offspring, some had white fur, while others had dark gray fur. Use the image below to help you answer the following questions. Which of the following descriptions about the parents is most likely true?

A Their gene combinations for the fur color trait are the same.

B Their gene combinations for the fur color trait are different.

C Their gene combinations for the fur color trait depend solely on the environment.

D Their gene combinations for the fur color trait do not affect their offspring. ​

Answers

Answer:

I believe the answer is B.

a condition in which the number of red cells or the amount of hemoglobin is below normal

Answers

Answer:

The condition is anemia.

Explanation:

Anemia is a medical condition in which the red blood cell count or the hemoglobin is less than normal.

What is an angiosperm? Provide 2 examples. PLEASEE

Answers

Answer: Angiosperms represent approximately 80 percent of all known living green plants. Examples range from the common dandelion to ancient flowers such as magnolias. Angiosperms also make up the vast majority of all plant foods we eat. (Ex. grains, vegetables, and fruits.) The angiosperms are vascular seed plants in which the ovule (egg) is fertilized and develops into a seed in an enclosed hollow ovary The ovary itself is usually enclosed in a flower, that part of the angiospermous plant that contains the male or female reproductive organs or both. fruits are derived from the maturing floral organs of the angiospermous plant and are therefore characteristic of angiosperms.

Explanation: ^

Which two systems below work together to rid the body of harmful parasites?

skeletal and circulatory systems
immune and lymphatic systems
muscular and nervous systems
respiratory and immune systems

Answers

Answer:

Immune and Lymphatic Systems

Explanation:

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