In an effort to maintain homeostasis, the organ systems of the human body work to keep the body's internal water level constant. Which of the following statements describe how the human body responds when its internal water level drops too low?
(I’ll give brainliest)

A. The skeletal system produces more circulating blood cells that insecure the body’s water intake

B. The excretory system signals the kidneys to retain more water and produce more concentrated urine to decrease water loss.

C. The nervous system signals the muscles to constrict , holding more water in the digestive track and decreasing water loss .

D.The excretory system signals the kidneys to release more water into the bladder to increase water loss .

Answer:

B.

Explanation:

When we are dehydrated, our urine tends to be more yellow, right? That's because our urine contained less water to dilute the chemical compounds causing the yellow color — when we're dehydrated, our kidneys decide to pull less water out of the bloodstream than normal.

Define the five systems. Be sure to include enough information to distinguish each system from the others.

if you dilute a 20.0 mL of a 3.5M solution to make 90.0 mL solution what is the molality of the dilute solution?

Given:

unknown:


show work:

Which of the following could alter the expression of genes in an organism?

Select one:

Large numbers of cells being produced at one time.

The deactivation of a particular chromosome in the nucleus.

The loss of cytoplasm from inside of the cell.

A change in the sequence of nitrogen bases in the DNA.

What is the main cause of Earth's global winds?

A. The equator receives more direct incoming solar radiation than the poles.

B. The depletion of the ozone layer causes more UV radiation to escape from Earth.

C. The air, water, and sand on Earth are evenly heated at the equator and the poles.

D. The average kinetic energy of air molecules decreases when solar radiation is received.​

what two changes would decrease the density of ocean water

Consider this microscopic image of bacteria.

Rod-shaped bacteria is shown.

Based on its shape, what is most likely the form of this bacteria?
coccus
staphus
bacillus
spirill

adaptations of a muscle cell to its functions​

What processes and what form is carbon released from all organisms?

(Psychology)

Hi, I just need help with these question. Don’t put links to files or I’ll report!

PLEASE HELP! I WILL GIVE BRAINLIEST. Explain the process of succession.

5. An insect population grows exponentially until an early winter freeze kills almost all the insects the next spring population
grows exponentially again this type of population growth is known as
A. rolling curve.
B. boom and bust.
O C. population boom.
D. exploding population.

An example of natural selection is the peppered moth found in Europe. There are two color forms of this moth, shown in the diagram. Form X was more common before the industrial revolution covered the trees with smoke and dust. Form Y is more common after the industrial revolution. Which statement explains why these two color forms exist at the same time? *


Some organisms inherit traits enabling them to adapt better to the environment.
Some organisms acquire traits during their lifetimes that they pass to our offspring.
Some organisms do not reproduce as many offspring during their lifetimes.
Some organisms die before they reproduce offspring.

Someone please help!


Don’t send links

In genetics, what does a genotype of Hh signify?

What is the main function of the organs shown

Why would it be difficult for the motion of the Earth to suddenly change?​

Please help!! I have to turn this in like right now lol

Can some help me out

Unit 5 DQ 1 Debate on global warming The issue of global warming has become an unending debate. Which side of the debate are you in? Support your decision with one reference​

Match each immune cell with the method it uses to neutralize a pathogenic microbe that has infected a human - Cytotoxic T cell - Helper T cell - B cell - Natural Killer Cell - Macrophage - Mast Cell A. kills infected human cells after recognizing antigens displayed on MHC class 1 B. does not directly kill microbes; after recognition of a specific antigen displayed on MHC Class 2, it secretes molecules that help other cells to do so. C. phagocytoses microbes after recognizing specific antigens; secretes antibodies D. kills virus-infected human cells by releasing perforin and granzymes. E. Phagocytoses microbes after recognizing PAMPs; acts as an Antigen Presenting Cell to activate another type of immune cell F. Does not directly kill microbes; secretes histamine to initiate an inflammatory response.

How does the movie “The Martian” related to a biology concept?

River dolphins are morphologically distinct from other dolphins and are primarily restricted to freshwater ecosystems in Asia and South America.

a. True
b. False

Which of these statements about Hox genes is true?
A. They regulate the development of body parts.
B. They occur in random places on the chromosome.
c. They were first discovered in mammals.
D. They are only involved in the development of embryos,
not adults.

give me some ideas...pls

How can friction be lessened?

A). Add less force
B). Add more force
C). increase the speed
D). add wheels

How are Photosynthesis and Cellular Respiration Cycles connected?
1)The products of one cycle become the reactants of the other.
2)The sun provides energy for both photosynthesis and respiration.
3)Photosynthesis and respiration both take place in the mitochondria.
4)Animals eat plants for food and then do not need to perform respiration

pleaaaseeee helpp meeeeeee ​

Lab: Interdependence of Organisms

Interdependence Of Organisms

Question Being Answered:

How can the presence of one species benefit another in the same ecosystem?

Hypothesis:

If plants grow in soil that contains worms the plants growth will be greater because worms are able to help decompose organic matter and help distribute it through the soil in a form plants are able to use.

Process Of Lab:

In this lab you will grow two different groups of plants. Group A is considered the experimental group which will grow in soil with worms, Group B is considered the control group which will grow in soil without worms. After the plants grow you have to measure the plant growth for both groups and compare them.

Independent & Dependent

Independent Variable: Presence Of Worms

Dependent Variable: Plant Growth

Safety Procedure

Be sure to follow the safety procedure which means to

Wear safety goggles and lab gown while doing the experiment

Keep lab behavior purposeful

Look over the soil contents and make sure to follow warnings provided on any equipment

Wash hands and lab equipment once done with experiment

Treat living organisms with respect and provide proper care

Report any accidents that happen in the lab to your teacher

Lab Procedure

Step 1: Gather Materials

Two trays that are 10 cm 4’ deep

Potting soil

Lima bean seeds which need to be soaked overnight

Location with sunlight or growth lights

Worms

Graduated cylinder

Water

Black marker

Ruler with metric markings

Step 2: Prepare Two Trays Of Lima Bean Plants

Label the trays Control Group and Experimental Group

Add approximately 6-7 cm of soil to each tray

Plant 6 lima bean seeds in each tray being 2 cm deep and label the plants 1-6

Step 3: Give The Plants Water And Light During Sprouting Time

Keep the environments for both groups identical

Water all the plants following the watering schedule that was recommended on the seed packaging

Use the graduated cylinder to ensure the same amount of water is being given to both groups

Make sure all plants get the same amount of light

Step 4: Measure The Heights Of The Plants At The End Of Week 1

Measure the height of all twelve plants to the nearest cm. If a plant dies mark an x on the data table for that plant and write it in your notes

Use a calculator to find the average heights of the living plants in each groups

Calculate the difference in those average heights by subtracting the average height of the plants in the control group. Use this difference as a basis for comparison

Record measurement observations in your notes and the health of the plants such as leaf colors and size, wilting, unusual growth, brown spots, and any other marks you see

Step 5: Add Six Worms To The Soil Of The Experimental Group Of Plants

Write descriptive notes about the condition of the worms in your notes

Step 6: Measure The Heights Of The Plants At The End Of The Week 3

Repeat step 4

Step 7: Measure The Heights Of The Plants At The End Of Week 5

Repeat step 4

Step 8: Check The Health Of The Worms At The End Of The Study

Are the worms still alive?

Do they all seem healthy?

Have they changed in any way? If so list the ways changed

Are there any new worms

Be sure to write descriptive notes about their conditions in your notes

Step 9: Dispose Of All Material According To The Directions From Your Teacher




Week 1 (Before Adding Worms)

Week 3

Week 5

Plant 1

10cm

22cm

49cm

Plant 2

9cm

23cm

47cm

Plant 3

8cm

20cm

49cm

Plant 4

9cm

22cm

50cm

Plant 5

10cm

22cm

47cm

Plant 6

8cm

23cm

52cm

Control Group Average

9cm

22cm

49cm

Plant 1

8cm

24cm

50cm

Plant 2

9cm

28cm

60cm

Plant 3

8cm

26cm

49cm

Plant 4

8cm

25cm

53cm

Plant 5

8cm

27cm

58cm

Plant 6

7cm

26cm

60cm

Experimental Group Average

8cm

26cm

55cm

Difference In Average Heights

-1cm

4cm

6cm

Table answers go from left to right in the order I put

What causes the surface winds of a hurricane?

5) Select True or False. If False, select the statement that makes it True. A piece of plastic is not a mineral because it is made in a factory and is not found naturally in the Earth. True False; A piece of plastic is a mineral because it is inorganic. False; A piece of plastic is a mineral because it is made in a factory and is not found naturally in the Earth False; A piece of plastic is a mineral because it is a mixture.​