Cystic fibrosis is a recessive gene disorder. The pedigree chart for a family known to have cystic fibrosis is shown below.

What percentage of the offspring either are carriers or have observable disease?

25%
50%
75%
100%

When half of the shape is black it means the person is a carrier. When the whole shape is black this means the person has the disorder.

d.100%

Plzz help
Acquired mutations _____.
only occur in sperm cells
can be caused by radiation
are inherited
only occur in egg cells

Which is an example of a sudden change that could lead to the extinction of species?
A. a mountain range isolates a species
B. Earth's tectonic plates move
C. a volcano erupts
D. sea level change

How is the process of fertilization in animals like the process that takes place in plants?


Spores can become sperm that will fertilize the egg.


Self-fertilization is possible if no partner is available.


A sperm cell and an egg cell combine to form an embryo.


Sperm is encased in a grain of pollen to travel to an egg.

what organ system is affected? in albinism

The temperature of the water in Glass A is 90°C. The temperature of the water in Glass B is 30°C. When each is poured into a container of water which is 60°C, which of the following statements is most likely to occur?

A. Water from Glass A will sink to the bottom while water from Glass B will sink.
B. Water from Glass A will rise to the top while water from Glass B will sink.
C. Water from Glass A will sink to the bottom while water from Glass B will rise.
D. Water from Glass B will rise to the top while water from Glass A will rise.

HELP ME PLZ- I HATE SKOOL >:((

Which is an example of a functional adaption?
A. a brightly colored butterfly
B. birds flying south in the fall
C. the spray of a skunk
D. thorns on a rose

what organ system is affected? in colorblindness

Please Help!!!! Thank You! 15 points!

Researchers have been studying how emissions from both volcanoes and human activities, such as the burning of fossil fuels, impact the atmosphere. Both types of emissions contribute to the total CO2 levels in the atmosphere. Graph 2 shows that atmospheric CO2 levels have been steadily increasing over time. This increase in CO2 levels has been linked to the increase in global surface temperatures.

Explain why the total mass of carbon must be decreasing in a different step of the slow carbon cycle based on the on the increase in atmospheric CO2.

Use two words to describe each rock type.

Plz...
Correct Answers Only

Xavier drew a diagram to compare the roles of oxygen and hydrogen in photosynthesis.


Which label belongs in the area marked X?

Enters plant as a part of water
Combines with carbon dioxide
Is released into air through stomata
Is stored in leaves for later use

Robins feed on earthworms, which live in moist soil. If a drought took place, we could expect the number of ___________.

Pls help i will mark brainliest!
Describe rock formation and make sure to use vocabulary

is albinism a dominant or recessive trait? Explain your answer.

please please help!! i'm struggling,,

In what way does an earthquake provide evidence about the layers of Earth? Use complete sentences to write your answer.

Which is NOT an example of a structural adaption?
A. a pelican's pouch-like beak
B. Camouflaged seahorses
C. The migration of birds
D. dense fur on a brown bear

Do you think that humans and humpback whales share a common evolutionary lineage?

arious impairments of the mind are commonly associated with old age. To what extent are these biological in origin? To what extent, social in origin?

HURRY I WILL GIVE BRAINLEST JUST PLS HURRY IM ON MY FINALS EXAM!!!!!!

Which scientist most inspired Darwin to pursue his studies of evolution?

A. Linnaeus, who first proposed that humans and primates are similar
B. Malthus, who thought that populations could outgrow their food sources
C. Linnaeus, who thought that populations could outgrow their food sources
D. Malthus, who first proposed that humans and primates are similar

salivary glands release a liquid called saliva, which helps to break food down.

1. mechanical
2. chemical

The water cycle is also called the Hydrolic Cycle.
It is the process by which water circulates between Earth’s oceans, atmosphere, and land.
It involves the following:
Water storage
evaporation
transpiration


_________________________
_________________________

_________________________ hold 96.5% of Earth’s water.
This is the primary pathway into the water cycle.
Oceans, seas, lakes, and rivers provide _____% of the moisture in our atmosphere through evaporation.

The process by which water changes from a _________________________ to a _________________________ .
It is the primary pathway that water moved from the liquid state back into the water cycle as _________________________ .
_________________________ (energy) from the sun is necessary for evaporation to occur.
Energy _________________________ bonds that hold water molecules together.
Boiling Point: _________________________
Freezing Point: __________________________
_________________________ is the process of snow and ice changing into water vapor without first melting into water.
_________________________ is water lost to the atmosphere when the ground surface and transpiration of groundwater by plants through leaves.

Superhighway used to transport water around the globe.
Involves _________________________ and _________________________ .

The process in which water vapor in the air changed into _________________________ .
The loss of _________________________ allows water molecules to bond,
Forms _________________________ or _________________________ .

Is water released from clouds in the form of:
_________________________
_________________________
_________________________
_________________________
_________________________
Provides the delivery system of _________________________ water to the Earth.

These are examples of water locked up in its present state of matter for a relatively long period of time.
This involves _________________________ and _________________________ .

This is _________________________ that did not get absorbed into soil, or evaporate.
_________________________ and _________________________ provides runoff when they melt._________________________
Water moved by _________________________ makes its way into places that collect water.
_________________________
_________________________
_________________________
_________________________

This is the downward process of moving water from the _________________________ into soil or poros rock.
_________________________ is large amounts of water stored in the ground.
_________________________ is another name for groundwater.


This is the area of land where all the water that dallas in it and grains off of, goes into the same place.
It can be as small as a footprint or as large as all the land that drains water into the _________________________ .

7th grade science need help

Is the classification system of domains and kingdoms the only system that scientists have ever used to classify organisms?

Smooth muscle _____.

is only found in the heart
appears to have stripes
controls involuntary actions
is also called skeletal muscle

Instructions: Write a new argument that supports the sub claim you chose above. This argument will be the second part of the press release, so make sure it is clear and convincing. • Include evidence and explain how this evidence supports this sub claim. • Look back at your work from this lesson. • You may also want to use the Argumentation Sentence Starters for help with organizing your thinking and constructing your argument.

The subclaim is; Bacteria from the fecal transplant can help the patient’s body produce immune cells that kill invading bacteria.

What were key documents referenced in the establishing Arizona Statehood?

PLEASE HELP WILL GIVE BRAINLY AND POINT!!!!
A student at an exhibition looks at a model of Earth, as shown. The model is made using different colors to show water and land on the surface of Earth. The color green shows areas covered in land and blue shows areas covered in water. Each side of the model is shown.



The student learns that the water on Earth is stored in different forms. Water on Earth is broadly categorized into salt water and freshwater. The usability of water depends on the quantity available and its characteristics. The model shows the distribution of water on Earth in various reservoirs.

Question:The student claims there are large quantities of water immediately available for humans to drink on the surface of Earth. Is the claim given by the student correct? Use evidence from the graphs to describe why or why not.

PLEASE HELP 20 POINTS
Describe some of the main geologic events occurring during the Mesozoic era. This would include formation of mountains, opening of oceans, crunching continents, volcanic activity, major deposition of sediments, major structures eroded, etc: