What is an equinox and when does it happen?

Answers

Answer 1

An equinox is commonly regarded as the instant of time when the plane (extended indefinitely in all directions) of Earth 's equator passes through the center of the Sun. This occurs twice each year: around 20 March and 23 September.

Answer 2

Answer:

An Equinox is commonly regarded as the instant of time when the plane of Earth's equator passes through the geometric center of the Sun's disk. This occurs twice each year, around 20 March and 23 September.  In other words, it is the moment at which the center of the visible Sun is directly above the equator.

Explanation:


Related Questions

If your going to a sandy beach on a sunny day, which would feel warmer- the sand or the water?

Answers

Answer:

the sand

Explanation:

How is the blackjack seed suited to its method of dispersal?

Answers

Answer:

Seeds are widely dispersed through the fruits hook-like bristles that embed themselves in clothing and the fur of mammals and feathers of birds. They are also spread by wind, water and soil.

Explanation:

Pollen makes a tube to the ovary through the what of a flower

Answers

Answer:

After pollen grains land on the stigma, a pollen tube grows from the pollen grain, through the style, and into the ovary. Sperm cells inside the pollen grain travel down the pollen tube and into the ovary which contains the ovules.

Answer:

Explanation:

give the other person brainliest

What Earth materials are represented by the numbers 1 and 4?
A. igneous rock and magma
B. lava and magma
C. sediment and magma

Answers

Answer:

Sediment and magma

Explanation: I took the test and I got it all right so i hope this helped :)

if two creatures with droopy ears mate, can their offspring have pointy ears? explain your answer.

Answers

no because they're genetics

if one species in a community dies out or moves, the community will

Answers

The Community will be affected because all Species Interact and interconnected the Community can be affected by changes of population size

Answer:

The community will slowly decline, or be just fine, or be better off.

Explanation:

Wolves being killed in Yellowstone showed that Yellowstone suffered, because there was nothing to kill the elk, so their population exploded and they ate everything.

If certain rats were gone in certain areas, then the community/environment would be fine, because rats eat birds and other small animals (they eat too many of them).

And if stray cats were gone then certain forests would be better off and see an increase in birds population, stray cats eat birds.

For the Rock Pocket Mouse, what accounts for the difference in the color of the environment?

Answers

Answer:

Changes in the Mc1r gene sequence are not responsible for the colour difference in the mice sampled from New Mexico, however, leading the researchers to conclude that the almost identical dark coat colours developed multiple times in rock pocket mice, an example of convergent evolution.

Changes in the Mc1r gene sequence are not responsible for the colour difference in the mice sampled from New Mexico,

yet, leading the researchers to conclude that the almost identical dark coat colours developed multiple times in rock pocket mice, an example of convergent evolution.

Why are rock pocket mice different colors?

There is natural variation of coat color in the population of rock pocket mice living on the lava flow.

The mutations can cause a change in coat color, and  these genetic changes are passed on to offspring.

Thus, due to the Mc1r gene there are difference in the color of the environment.

To learn more about Mc1r gene click here:

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Which section of the article BEST explains how
mole rats developed the strange metabolic
strategy?
A
"Super-Tolerant To Low Oxygen Conditions"
B
"Mice, Naked Mole Rats Differ In Tests"
С
"Blood Fructose Levels Start To Rise"
D
Metabolism Switch Gives Them Boost Of
Energy

Answers

Answer:

D

Explanation:

is D because is the only one who talk about more about metabolism. I hope it help you

help pls I rlly need it?:(

Answers

Answer:there is no question

Explanation:

What is the term for "anything that takes up space and has mass"?

A.
Water

B.
Atom

C.
Electron

D.
Matter

Answers

d


hope that helped:))

WHY ARE C-19 (CORONA VIRUS) NOT ACCURATE AS TOLD?

Answers

because it is a new virus that us humans have not experienced and we are still learning about it

Part B
What are the strengths and weaknesses of the cell model?

Answers

Answer:

strengths:The cell model shows all the process involved, and it's easy to understand, even if a person isn't familiar with the process

weaknesses: it doesnt show organelle or rna

Answer:

The cell model clearly shows all the processes involved, and it’s easy to understand, even if a person isn’t familiar with the process. The actual cell diagram doesn’t show all the organelles, so it’s an inaccurate representation of the cell. It also doesn’t show all the RNA involved in transcription and translation.

Explanation:

Plato / Sample Answer

Scientists continually work to better understand human diseases. Knowledge of the human genome enables them to better understand the proteins involved. How does analyzing human genomes help scientists in this endeavor?

a) Chromosomes join together to make proteins.
b) The bases that make up DNA are also present in RNA
c) DNA contains the information used to make proteins.
d) Nucleic acid molecules have shapes similar to those of proteins.

Answers

Answer:

I believe the answer is c.

Answer:

The correct answer is c) DNA contains the information used to make proteins.

Explanation:

I took the test and made a 100 so you can trust me

Please leave a thanks and rate this answer 5 stars. You don't need an acount to do this!

4. Compare and contrast the rate of sea floor spreading along the Mid-Atlantic Ridge and East
Pacific Rise.

Answers

Answer:

The Mid-Atlantic Ridge runs down the center of the Atlantic Ocean. ... The rift valley is 1 to 3 km deep, about the depth and width of the Grand Canyon. In contrast, the East Pacific Rise spreads fast at rates of 6 to 16 cm per year (more than 20 cm per year in the past).


1. Fill the big bowl with water almost to its rim.

Answers

I did what do I do with big bowl

c. What percentage of the offspring will be round? _______________

6. RR x Rr
a. What are the different kinds of gametes these parents can produce? ___________
b. Make a punnett square
porcierto una chica me gusta xd y la ayude

Answers

Answer:

Technical there is a 50% chance but I think the answer would actually be 25% chance of being round

If anyone can help with any of these I would greatly appreciate it ;-; its due in about an hour

Answers

Answer:

Like ur carpet.

GIVING BRAINLIEST TO FIRST GOOD ANSWER! A LOT OF POINTS PLS ADD EXPLANATION MARINE SCIENCE
A scientist wants to test whether the pH, salinity, or temperature of seawater impacts coral development. He sets up an experiment with three conditions:

Aquarium 1: Normal pH, normal salinity, normal temperature
Aquarium 2: High pH, high salinity, high temperature
Aquarium 3: Low pH, low salinity, low temperature

What factor would improve experimental design the most? (3 points)

Select one:
a. Eliminating Aquarium 1 since it only uses normal conditions
b. Testing one variable at a time and keeping the other two variables constant
c. Using one aquarium and changing the variables from day to day
d. Setting up the variables on a gradient in each aquarium

Answers

Answer: The answer is 1

Explanation:

Which statement is true for all prokaryotic and eukaryotic organisms?
Both types of organisms have DNA contained within a nucleus as genetic material.
Both types of organisms transform energy from sunlight into chemical energy.
Both types of organisms assemble proteins through transcription and translation.
Both types of organisms are made of cells, tissue, and organs that work together.

Answers

Answer:

Both types of organisms have DNA contained within a nucleus as genetic material

Answer:

tt

Explanation:

W Within a forest ecosystem, there is a large amount of diversity among members of a warbler species. Of the following stages of meiosis illustrated for a typical cell, which contributes most to diversity among the warblers? Pay special attention to the chromatids.​

Answers

Answer:

Explanation:

How a Forest Ecosystem Matures . Forest ecosystems tend to always be moving toward maturity or into what foresters call a climax forest. This maturing, also called forest succession, of the ecosystem increases diversity up to the point of old age where the system slowly collapses. One forestry example of this is the growth of trees and the entire system moving toward an old growth forest.

A Large amount of warbler species, crossing over between homologous chromosomes, is closely involved in genetic variation. The stage that most contributes to diversity is stage C, where you can see chromosomes after crossing-over.

There are different mechanisms involved in producing genetic variation among descendants, are-

Crossing-over between homologous chromosomes (prophase 1), The Random lining of homologous chromosomes (metaphase 1),

Random fertilization

The Crossing-over events occur between two homologous chromosomes within the equatorial plane and make the daughter cells genetically different from the first one.

The Chiasma is the position where two homologous chromatids interchange genetic information, giving an area for brand spanking new genetic material or information to be provided to descendants.

After crossover, homologous chromosomes get separated again. In the attached image there are four different stages of meiosis.

Stage C is the one that contributes foremost to diversity. We can see that crossover has already occurred between homologous chromosomes and that they have already interchanged segments.

In the image, you will see the difference between chromosomes that have gone through the crossing over mechanism, and chromosomes that have not. The difference in color represents segments interchange and variation.

Therefore, that answer shows the contribution to diversity among the warblers.

Learn more about the Crossing over here:

https://brainly.com/question/12911831

Describe the electron transport chain including its reactants and products

Answers

Answer:

The electron transport chain is a series of electron transporters embedded in the inner mitochondrial membrane that shuttles electrons from NADH and FADH2 to molecular oxygen. In the process, protons are pumped from the mitochondrial matrix to the intermembrane space, and oxygen is reduced to form water.

Explanation:

The electron transport chain is a series of four protein complexes that couple redox reactions, creating an electrochemical gradient that leads to the creation of ATP in a complete system named oxidative phosphorylation. It occurs in mitochondria in both cellular respiration and photosynthesis.8

What are the four processes in which matter cycles on Earth?​

Answers

Answer:In the rock cycle, rocks and matter go through uplift, weathering, erosion, deposition, melting, crystallization, and metamorphism as they travel between Earth's surface and its interior layers. In the water cycle, water particles undergo evaporation, condensation, precipitation, and flow.

Explanation:

Once the DNA strand unwinds and is modified; it sent through the
nucleus for translation. What stage of translation would most likely
occur at letter A?
A) initiation
B) elongation
C) termination
D) RNA processing

Answers

Answer:

I think it is A.

Explanation:

Which is not a function of the respiratory system? *
It warms air entering the body.
O It exchanges oxygen and carbon dioxide.
O It pumps blood to the organs.
O It creates sound through the voice box.

Answers

Answer:

it exchanges oxygen and carbon dioxide

Explanation:

You inhale oxygen and exhale carbon dioxide

Out of the given options 3 that is "it pumps blood to the organs" is not a function of the respiratory systems.

The respiratory system is a network of organs and tissues that assist you in breathing. This system assists your body in absorbing oxygen from the air so that your organs can function.

It also removes waste gases from your blood, such as carbon dioxide. Allergies, illnesses, and infections are common difficulties.

The respiratory system contributes to the warming and humidification of the air we breathe. The air is warmed as it goes through the nasal passages and pharynx, which helps to protect the lungs' sensitive tissues.

The respiratory system contributes to the production of sound. When air flows through the larynx (voice box), the vocal cords vibrate, producing sound.

Thus, the option 3 is not the function of the respiratory system.

Learn more about Respiration System here,

https://brainly.com/question/3319384

#SPJ6

cell is immersed in a
Plasmolysis occurs when a/n)
solution.
O animal; 3X salt solution
O plant; pure water
O animal; pure water
O plant; 3X salt solution

Answers

Answer:

Plasmolysis occurs when a plant cell is inmersed in a 3X salt solution.

Explanation:

Plasmolysis is a phenomenon only observed in plant cells, and consists of cell dehydration accompanied by separation of the membrane and cell wall when the cell is exposed in a hypertonic environment.

When a plant cell is in a hypertonic solution —such as 3X salt solution— the permeability of its membrane allows water to escape, so the cell dehydrates and reduces its size. The cell wall is rigid and maintains its shape, but the cell membrane separates from it, which is known as plamolysis.

The other alternative answer combinations are not correct because:

Plamolysis does not occur in animal cells. Pure water does not produce plasmolysis.

What types of rocks do the numbers 2, 3, and 5 represent, in that order?
a. igneous, sedimentary, metamorphic
b. metamorphic, igneous, sedimentary
c. sedimentary, igneous, metamorphic
d. sedimentary, metamorphic, igneous

Answers

Answer:

d) sedimentary, metamorphic and igneous

Answer:

The answer is B

Explanation:

How do two copies influence the traits of an individual?
How might missing, damaged, or extra chromosomes affect an individuals traits.

explain how chromosome number affects traits.

use scientific vocabulary

Answers

Answer:cookie

Explanation:

Which best describes the pericardium?
structures inside the heart that ensure that blood flows in one direction only
a sac around the heart that allows the heart muscle to receive oxygen
a sac around the heart that protects the heart and chest tissues
structures inside the heart that bring blood to the lungs for oxygenation

Answers

Answer:

c

Explanation:

The pericardium is a thin sac that surrounds your heart. It protects and lubricates your heart and keeps it in place within your chest

Pericardium is best described as a sac around the heart that protects the heart and chest tissues.

What is the Heart?

This is the central organ of the circulatory system which is involved in pumping blood to other parts of the body.

The pericardium surrounds the heart and helps to protect it from external pressure and other factors.

Read more about Pericardium here https://brainly.com/question/1224295

Describe the control group for an experiment that examines the effect of fire intensity on the biodiversity of tree communities.

Answers

Answer:

explanation below

Explanation:

The control group would be the biodiversity of the trees without the fire

The control group in the experiment would center on the biodiversity of the trees without the fire. Ideally, both the control group and the experimental groups are usually identical in every way except that the experimental group would receive the treatment that is believed to have an effect on the biodiversity of trees.

For an experiment seeking to study the effect of fire intensity on the biodiversity of tree communities, the control group will be an experimental unit consisting of a community of biodiversity of trees with no fire or treatment.

In a scientific experiment, they are usually two main groups of experimental units. They are:

The Experimental Group: This group of experimental units receive the treatment. In the case of the experiment cited above, the experimental group would be a community of biodiversity of trees that is set on fire.The Control Group: This experimental units do not receive treatment. They serve as the basis for comparison. In the scenario cited in the question, the control group would be a community of biodiversity of trees without the treatment, which is, no fire on the community.

Therefore, for an experiment seeking to study the effect of fire intensity on the biodiversity of tree communities, the control group will be an experimental unit consisting of a community of biodiversity of trees with no fire or treatment.

Learn more here:

https://brainly.com/question/11339884

Why do we need cell division?

Answers

Cell division serves as a means of reproduction in unicellular organisms through binary fission. For growth to occur in living organisms, the number of cells have to increase through cell division until it reaches its maximum size. The human body also repairs injuries by means of cell division.
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