There are 3 types of polar bears: ones with thick coats, ones with thin
coats and ones with medium coats. It is fall, soon to be winter. The temperatures are dropping rapidly and the bears must be kept warm, or they will freeze to death. Many of the bears have had ~2 cubs each
but due to the extreme temperatures, many mothers only have one cub left.
Identify a type of variation in the polar bears ______________________________________________________ Which variation is most favorable? _______________________________________________________ In 50 years, what will natural selection have most likely done to the polar bears? _________________________________________________________________________________

Answer:

the ones with thicker coats are the most favorable and due to natural selection they will grow even thicker coats

Explanation:

Life, Water, Air, and Land
In this activity, you will write a description of the terrarium model you created to represent the
different systems (spheres) of Earth. Make sure to include the words geosphere, biosphere,
hydrosphere, and atmosphere in your description

Which of the following is true about spores?


Spores are much larger than seeds.
Spores are much larger than seeds.

Spores are not used for plant reproduction.
Spores are not used for plant reproduction.

A. Most flowering plants produce spores.
B. Most flowering plants produce spores.
C. Spores are much smaller than seeds.
D. Spores are much smaller than seeds.

ANSWER QUICKLY PLSSSSS

(1) Which example is of a species changing over time?
A. After the death of the chestnut trees, oak trees became the dominant species.
B. A morning-glory plant is found curled around the post of a mailbox.
C. A birch tree in the forest reached its full mature height.
D. A ground-level plant develops curling tendrils that wrap around other objects so it can "climb."

(2) What do different environments cause different species to do?
A. become less diverse
B. become more diverse
C. become extinct
D. have similar traits

(3) What will a species that adapts be more likely to do?
A. survive
B. mutate
C. Live a shorter life
D. become extinct

(4) Which structural adaptation helps an organism obtain food?
A. the bright-colored skin of a poison dart frog
B. dandelion seeds that can float in the wind
C. the long neck of a giraffe
D. the cardinal's bright red coloring

(5) Which structural adaptation would help a plant survive better in a shady
environment?
A. small leaves
B. large leaves
C. brightly colored flowers
D. thorns

Please answer I need help for these five questions :)

There are 2 types of worms: worms that eat at night (nocturnal) and
worms that eat during the day (diurnal). The birds eat during the day and seem to be eating ONLY the diurnal worms. The nocturnal worms are in their burrows during this time. Each spring when the worms
reproduce, they have about 500 babies but only 100 of these 500 ever become old enough to reproduce.
Identify a type of variation in the worms.
______________________________________________________
Which variation is most favorable? _______________________________________________________ In 50 years, what will natural selection have most likely done for the worms? _________________________________________________________________________________ What adaptations might occur in the birds in 100 years? ______________________________________ ________________________________________________________________________________________

please help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

please hlep me!!!!!!!!!!!!!!EEEEEEEEEEE!!!!!!!!!!!!EEEEEEEE

Which structural adaptation will help a plant survive better in the rain forest?
The ability to store more water.
The ability for its flowers to attract pollinators.
The ability to survive cold temperatures.
The ability for water to run off its leaves.

I need major help! I don't know this

Which statement best explains why cells differentiate in multicellular organisms?
O Cells differentiate to form cells with different DNA that perform different functions.
O Cells differentiate to form specialized cells that make up tissues and organs.
O Cells differentiate to form the cells necessary for reproduction.
O Cells differentiate to create proteins and fat.

please help me with this!!!!!!!!!!!!!!!!!!!!!!!!!1

Please answer this correctly and don’t just answer it if you aren’t actually going to give me answer. The pages I have linked to this, are mostly to help answer the question just answer the first question or if you want the second one as well.
Thank you.

You are going to create your own model that shows the movement of matter among plants, animals,
decomposers, and the environment.
Part One
You will create a 3-D model (diorama) or a 2-D model (poster) showing the movement of matter. Your
model must include the following:
• labels of plants, animals, decomposers, and the environment
• descriptions of plants, animals, decomposers, and the environment
Brainstorm ideas about what you want to create. Think about the materials you would like to use and
what you need to gather or buy. Write your list in the space provided.





You can now choose to take a picture and write a description of your model, or record a video of
yourself explaining the movement of matter. If you are writing your answers, follow the next set of
instructions.
Write a detailed description of your model and how it describes that matter is moved from plants,
animals, decomposers, and the environment.

In which situation would a mutation be passed from parent to offspring?
When the mutation is in a sperm cell.
When the mutation is in a skin cell.
When the mutation is in a muscle cell.
When the mutation is in a bone cell.

Answer this PLEASE!!!!!!!

Describe how the kidney and bladder work together to remove waste from the body.

Are all human cells capable of mitosis and cell division? How does this affect the body's ability to repair itself? Support your answer with specific examples. answer in at least 4 sentences
(THIS HAS NOTHING TO DO WITH THE REPRODUCTION!!!!!!!)

Gives us example of definition of carbon in your own words.
and the celsius *c
* this is for my science project and I have no definition for my carbon drawing.

Paleoecology
Evidence
What it tells us?
8l no


2. shapes of leaf edges


3. tooth marks in fossil shells


4. fossil pollen

How many different elements are involved in the chemical reaction above? (look at image)

What is the result if nucleotides pair incorrectly?
a mutation
cell death
chromosome duplication
a new type of gene

Constructed Response: Identify & describe 2 ways removing trees from a forest can affect the organisms who live there. Using the vocabulary words: Organisms, populations, communities, ecosystems, abiotic factors, and biotic factors.

Do someone know this?

Use the term “selectively permeable” in a sentence that
demonstrates its meaning.

This is soo over due can someone answer it ASAP it needs to be correct though

What are coronary arteries? What are their function? How are they involved in heart disease?

(This is due today!)


Which hamsters are the parents of the mystery hamster? Include evidence to prove that they are the correct parents.

In preparing a karyotype, a blood sample is centrifuged to separate the blood cells from the plasma. The plasma is discarded and a hypotonic solution is added to make the cells swell. The solution is centrifuged again. A drop of this material is added to a slide, dried, and stained. The slide is viewed and photographed. Based on this procedure where is the best place to discard the plasma?

The pedigree diagram shows how a dominant trait is
inherited in a family. Each colored shape represents a
person with the trait.
Which conclusion is supported by the pedigree diagram?

What type of weathering would occur in a location with an average temperature of -15 degrees Celsius and precipitation of about 75 cm per year?

Which organisms are both heterotrophic and autotrophic?
A. euglena and volvox
B. amoeba and euglena
C. euglena and paramecium
D. paramecium and amoeba