the opening in the iris through which light passes is the:

Answers

Answer 1

Answer:

Pupil

Explanation:


Related Questions

in an El nino event, surface temperatures of the pacific oceans are above average for at least a year. what effect, if any, would warmer temperatures have on the growth of a kelp forest ecosystem on the california coast?

Answers

El Niño is a phenomenon that impedes warm water to move westward and upwellings events. The kelp forest ecosystem is negatively affected by the rise in water temperature, lack of nutrients, and consequent effects.

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kelp forest

The kelp forest is a large population of brown algae that live in marine cool and relatively shallow waters rich in nutrients.

The population density is so high that they are considered to be marine forests, accomplishing many ecosystemic services, such as

absorbing CO₂, releasing a significant amount of O₂, protecting the coasts from waves erosion, and decreasing acidification.

They are shelter and source of food for many different species, becoming one of the most diverse and productive habitats.

El Niño Event

The El Nino Southern Oscillation -ENSO- phenomenon occurs due to a complex system of climatic oscillations between the ocean and the atmosphere.

This phenomenon causes significant perturbations in the usual pluvial regimens in the tropics. It provokes

dry seasons in areas where it usually rains

rainy seasons in desertic regions.

ENSO phenomenon is dominant in the global climate system.

Under El Niño conditions

A tropical and weak stream in the Pacific acquires strength while the opposite streams debilitate.

This change impedes warm water go westward, remaining on America's west coasts.

Upwelling does not occur on the America's coasts. In some regions, temperatures rise, and unusual precipitations occur in desertic or dry areas -Atacama desert-.

Other affected areas are Eastsouth Asia, Australia, and New Zealand, where there are fewer precipitations and cooler temperatures. Rainfall drops below the average, affecting crops and livestock.

Effect of warmer temperatures on the kelp forest

The kelp forest is very sensitive to temperature changes. As a fact, the forest distribution depends on temperature as a limiting factor.

El Niño event has a damaging influence on these forests, not only because they reduce the availability of nutrients but also because they produce a significant change in water temperature.

Ocean warming negatively impacts algae reproduction, growth, and survivorship.

Algae are damaged by the temperature rise to the point of being eliminated.

Associated species composing the marine ecosystem are affected too since they have no refuge, food and live in environments with a higher concentration of CO₂, lower O₂, and more acidification.

---------------------------------

You can learn ore about El niño event at

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We would expect cells found in the active muscles of animals to contain relatively large amounts of which cellular organelle? A) centrioles B) mitochondria Eliminate C) lysosome D) nuclei

Answers

Answer: B.) Mitochondria

Explanation:

how long does it take for a cockatiel egg to hatch

Answers

Answer:

18-23 days

Explanation:

18-23 days

18-23 days

18-23 days

18-23 days

18-23 days

18-23 days

Answer :

Incubation is 18 days from the time cockatiels sit in earnest, therefore, count a few extra days if sitting is delayed. Allow the female to abandon the eggs of her own accord rather than removing them even if incubation time is over, because your cockatiel will only lay additional eggs if she reacts to their absence.

Explanation:

hope this helped... have a good day!

Pls help with the second one and if you could explain why for each

Answers

Answer:spongy tissue, because it’s the only thing without movement .

Explanation:

the origins of the atlantic slave trade were associated with the

Answers

the production of sugar!

notice or perceive
e. Observe:
f. Infer:
g. Repetition:
h. Replication:
i. Data

Answers

Answer:

Try e. Observe for an answer

If the DNA sequence is ATC-CGA, what is the complementary mRNA nucleotide sequence?
A
TAU-UAT
B
UAG-GCU
C
TAG-GCT
D
GCG-CGT

ASAPP

Answers

It would be letter b

what is most likely to result whn a mutation affects the dna sequence

Answers

Cancer is the most common human genetic disease; it is caused by mutations occurring in a number of growth-controlling genes.

Sickle cell anemia is a monogenic disorder in which the body produces abnormally shaped red blood cells. Sickle cell anemia is inherited in an autosomal recessive pattern. A person who is a carrier for this disease typically do not show signs and symptoms of the condition. Two cousins in Bangladesh got married and had kids without being aware that sickle cell disease runs in their family. Laboratory testing later showed that both partners were carriers for the sickle cell mutation. If this couple decides to have children, What is the chance (probability) that their children will also be carriers of the sickle cell disease?

Answers

Answer:

there's a ½ or 50% chance of their children will also be carriers of the sickle cell disease.

Explanation:

let IA = normal and IS =sickle cell

since both parents are carriers so it would be IAIS x IAIS

IAIS x IAIS

1 IAIA, 2 IAIS, 1 ISIS

Which neurons are responsible for
passing the collected information to
other neurons or can respond on their
own?
A. interneurons
B. motor neurons
C. sensory neurons
D. glial neurons

Answers

Answer:

A. interneurons

Explanation:

Which is an example of how traits can be influenced by the environment?
A. coat color in Labrador retrievers B. reading ability of identical twins
C. flower color in pea plants D. blood type in humans

Answers

Answer:

C.

Explanation:

Environmental factors influence traits in plants and animals. These traits include things like weight, height, size, and color. If a dog does not get proper nutrition and exercise, their weight will be negatively impacted. The dog is likely to be overweight if the environmental factors are not changed.

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Study this diagram of a flowering tree's life cycle. What is the error in the diagram?
as
stage 1
stage 2
Life Cycle of a Tree
stage 5
stage 4
stage 3
A stage 1
B. stage 2
C. stage 3
D. stage 4
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A
52

Answers

Answer:

3 because why not answering

If you placed the celery into a bottle of colored water that was 35% sugar, would the colored water be seen in the celery? Why or why not? (HINT: Drawing a diagram of this scenario may help – 35% sugar is a very concentrated solution…)

Answers

No , it is to concentrated to be absorbed fully

How much percentage of water does the human body have?

Answers

Answer:

Up to 60% of the human adult body is water. According to H.H. Mitchell, Journal of Biological Chemistry 158, the brain and heart are composed of 73% water, and the lungs are about 83% water. The skin contains 64% water, muscles and kidneys are 79%, and even the bones are watery: 31%.

Explanation:

does this help please mark brainliest

■ About 60% - 70% of the human body is water.

■ This can vary from person to person though. ■ The average in females is 45% - 60% , while in males it's 50% - 60%.

■ Babies have more water content percentage (70% - 75%).

[tex]\mathbb{MIREU} [/tex]

HELP ME PLEASEEE
1. What percentage of the offspring will be heterozygous?
2. Why does each parent contribute only one allele to the offspring?

Answers

Answer:

1. 50%

2. Every gamete only contains 50% of the genetic information or half of the information for a gene.

Explanation: 1. Heterozygous means the pairs consist of a dominant and a recessive, or one big and one small letter, so only 2/4 or 50% are heterozygous.

2. Every sex cell has half of the chromosomes you need to make an embryo so you end up only having one allele as well

Heterogeneous means different

Here they are 2Total 4

Percentage:-.

2/4×100=50%

#2

It's because they only produce 50% not 100%

What are some characteristics of scientific thinking?

Answers

Answer:

Open-mindedness. Capable of accepting new and different ideas.

Skepticism. Having an attitude of doubt.

Honesty. Scientists report results truthfully.

curiosity. leads to new scientific knowledge.

creativity. involves coming up with new sources and ways to solve problems or produce things.

what bonds in an atp molecule store the chemical energy used by cells?

Answers

Answer:

quais ligações em uma molécula atp armazenam a energia química usada pelas células?

Explanation:

espero ter ajudado boa noite

which layer of soil is closest to the surface

Answers

Required Answer :-

The Top soil is closest to the surface

The top most layer of the soil which contains humus and microorganisms in addition to soil particles is called top soil.

The quality of top soil determines the diversity of life in the region.

It is the most fertile layer of soil in which the plants are able to grow.

Cheers!!

How did the Mafia gain the interest and scrutiny of the public?

Answers

Mafia gain the interest and scrutiny of the public through their unique and fearful actions.

Mafia gain the interest and scrutiny of the public by threatening people in the society as well as killing some of them. The main aim of Mafia is to earn money so they perform many actions in order to gain money from the public such as extortion, kidnapping etc.

The person who gives money to Mafia is safe but that person who refuses to pay money to Mafia will gain the punishment of death so we can say that in this way Mafia gain the interest of the public.

Learn more about Mafia here: https://brainly.com/question/6025116

Learn more: https://brainly.com/question/26048379

In a chain of consequences after a forest is cleared, what is an immediate, direct impact?
O habitat is destroyed
O the greenhouse effect increases
O species go extinct
O carbon dioxide is sequestered at lower rates

Answers

Answer:

I think its the habitat is destroyed

PLEASE HELP WILL GIVE BRAINLIST!

this year there were 32 ants born in an ant hive. Due to the new pesticide that was used in the area, 32 died. With an overall population of 1000 ants in the hive, what is the change in population? Do you have a positive, negative, or zero change in population? How many members are in the new population?

Answer should contain the following information: work for calculating the change in population positive, negative, or zero change in population. Work for calculating the new population.

Answers

Answer:

0 change in population. I think.

Explanation:

first we are adding 32 ants to the total because 32 ants were born so 1000+32 = 1032.

Next we are subtracting 32 ants from the new total because a pesticinde was used in the area. So 1032 - 32 is 1000. 1000 was the original total so there was not a decrease in popualtion or an increase.

where in the respiratory system does gas exchange occur?

Answers

Answer:

lungs

Explanation:

its were the oxygen and carbon dioxide is being separated

Describe what happens to the right extra stuff in your body can't use

Answers

Answer:

Excretion-The excretory organs remove these wastes.This process of removal of metabolic waste from the body is known as excretion.

Azotemia-When nitrogen waste products,such as creatinine and urea,build up in the body,the condition is called azotemia.

what is the meaning of heart of the lungs ​

Answers

Oxygen is the heart of the lungs

competition between species can be a limiting factor in an ecosystem
True
False

Answers

Answer:

True

Explanation:

because it can be a limiting factor in an ecosystem

Carefully and completely answer the "essential question" of this activity. Use
complete sentences and details from the model to explain your position.
Essential Question: What is the relationship between photosynthesis
and respiration?

*Zoom in to the picture for a better view

Answers

Answer:

I. Examine Details

1. In what cell organelle does photosynthesis occur? cellular respiration?

Photosynthesis occurs in the chloroplast, while cellular respiration occurs in the mitochondria.

2. What are the three things needed for photosynthesis? Highlight them on the diagram in  green.

Sunlight, carbon dioxide, and water

3. What are the two products of photosynthesis? Highlight yellow.

Glucose and oxygen

4. What are the two things needed for cellular respiration? Highlight blue.

Glucose and oxygen

5. What are the three products of cellular respiration? Highlight purple.

Carbon dioxide, water, and ATP

6. What things are recycled (used over and over again) during photosynthesis and  respiration?

Carbon dioxide, water, oxygen and glucose

II. Apply (what you already know)

7. Sketch a model of typical plant cell and identify the mitochondria and chloroplasts.

8. What will happen to plants that are kept in the dark?

Plants will die since plants need daylight to deliver food. If there is no admittance to  sunlight, the Light Dependent response will not happen.

9. What will happen if you forget to water your plants?

The plants will die since water is a necessary reactant photosynthesis.

10. What happens to animals that are deprived of oxygen?

Those animals will not be able to perform cellular respiration.

III. Big Ideas

11. One hypothesis regarding the extinction of dinosaurs is that a meteor hit the earth  causing an explosion so powerful that dust blocked out the sun. Consider the model  above and explain why would this have caused a mass extinction?

Obstructing the Sun would cause the powerlessness for essential makers, for example,  plants, to go through photosynthesis, in this way not creating its own food fundamental for  development and energy.

12. When you walk your dog, you are using energy from the sunlight to power this activity.  

Explain. Sunlight gives the energy to essential makers to make their own food, using the carbon  dioxide and delivering oxygen gas as a result of photosynthesis. The oxygen that is  delivered into the environment is taken in by life forms as a reactant in respiration. Oxygen  allows for ATP creation. The ATP is the substance energy structure that is needed to convey all cell processes such as walking your dog.

13. Carefully and completely answer the "essential question" of this activity. Use complete  sentences and details from the model to explain your position.

Essential Question: What is the relationship between photosynthesis and respiration?

Photosynthesis and respiration are related since the reactants of photosynthesis are the  products of cellular respiration, and vice versa. For example, the reactants of  photosynthesis are energy, carbon dioxide, and water, while the products are oxygen and  glucose. The reactants of cellular respiration are oxygen and glucose, while the products  are energy, carbon dioxide, and water.

Explanation: there you go

List most dangerous greenhouse gasses in order

Answers

Answer:

Water vapor,Carbon dioxide,Methane,Surface level ozone Nitrous oxides and fluorinated gases

Which statement best describes these cells?
Х
Cell A
Cell B
Cell Blacks vacuoles while cell A has them.
DNA would not be found in either cell A or cell B.
Both cell A and cell
use energy release from ATP.
Both cell A and cell B produce antibiotics.

Answers

Answer:

cell blacks vacuoles while cell A has them

PLS HELP
Which of these would not be found in the pancreatic juice?

A.trypsinogen

D. secretin

B. nucleases

E. lipase

C. amylase

Answers

Anwer:

D. Secretin

Explanation:

Pancreatic juice contains Amylase, Lipase, Trypsinogen, and Nucleases (RNAase and DNAase).

Secretin is secreted by the mucosa of duodenum and jejunum.

In your own words, what is a trophic cascade?

Answers

Answer:

A trophic cascade is a side-effect when a trophic level (species) of the ecosystem is reduced or removed. Their ecological species interactions keep entire ecosystems balanced. Hence, suppressing their numbers or changing their behavior due to predation risk, results in an ecological imbalance or a trophic cascade.

Explanation:

BRAINLIEST PLEASE ;)

Answer:

Tropic cascades in an eco-system is when a prey changes its behavior due to the predators attacks, thereby increasing in numbers indirectly for the survival of the predators.

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