Answer:
Hydrogen bonds make water molecules spread out when they freeze. This makes ice less dense than water and allows ice to float. If ice did not float then oceans and lakes would freeze from the bottom up, killing marine life by trapping organisms in the ice. When ice floats, it insulates the water below, keeping it at around 4 degrees C or 40F, which does not freeze and allows fish to survive the winter.
Explanation:
not sure which one plz help
Answer:
I believe it's both C and D
Answer:
C and D.
Explanation:
Antibodies are proteins produced by the body's immune response against an antigen. They bind to foreign substances in the body to "mark" or signal to other parts of the immune response that the substances must be destroyed.
A good scientific question MUST be _____.
A. broad
B. testable
C. unusual
D. debatable
What conclusion can be drawn from this paragraph? A) time meant nothing to primitive people, B) People today have better memories, C) People have always used memory devices, D) Childern do not use memory devices. I posted a picture of the paragraph.
Answer:
A.time meant nothing to primitive
Convert the following measurements. 2L = __________ ml 5000 kg = ______ t 500 mg = ______ g 8000 mm = ____ m 25g = ________ mg
Select the correct answer.
The testosterone level in Brian's blood has dropped below the normal range. Which sequence of events will happen as a result?
OA. The pituitary gland secretes the luteinizing hormone (LH), which stimulates the hypothalamus to secrete the gonadotropin releasing hormone (GnRH).
Thisstimulates the testes to secrete testosterone.
B. The hypothalamus secretes the gonadotropin releasing hormone (GnRH), which stimulates the pituitary gland to secrete luteinizing hormone (LH). This
stimulates the testes to secrete testosterone.
OC. The pituitary gland secretes the gonadotropin releasing hormone (GnRH), which stimulates the hypothalamus to secrete the luteinizing hormone (LH).
This stimulates the testes to secrete testosterone.
B. The hypothalamus secretes the gonadotropin releasing hormone (GnRH), which stimulates the pituitary gland to secrete luteinizing hormone (LH). This stimulates the testes to secrete testosterone.
Answer: B. The hypothalamus
Explanation: just took the test
Which is a function of nucleic acids?
regulate cell processes
provide structure
break down energy
fight disease
last one ...........
Function g can be thought of as a scaled version of f(x) = 2.
Answer:
23
Explanation:
Please select the word from the list that best fits the definition
turn sunlight into electric current
Answer:
Need list
Explanation:
What words are on the list
Select the correct answer from each drop-down menu.
Laina is crime scene investigator. She knows that all biological physical evidence must be handled carefully until trial. What two things must
make sure to do with biological evidence?
Laina knows that all biological physical evidence must be kept at the proper
to preserve its stability and in the proper
to avoid cross contamination.
Reset
Next
Answer:
to preserve its stability.
to avoid cross contamination.
Explanation:
Biological evidence refers to all biological materials such as hair, tissue, bones, teeth, blood or other bodily fluids etc. These biological materials are collected from the site of crime. These evidences helps in finding the criminals. These biological evidences has to be kept at safe place in order to avoid contamination and preserve its stability so it can be used for solving the problem.
Answer:
temp and package for plato
Explanation:
im big brain boiiis
After sperm are produced, they move into a sperm storage area called the _____. A. scrotum
B. seminiferous tubules
C. epididymis
D. vas deferens
Answer:
epididymis
Explanation:
C. epididymis
good luck!
Which of the following appeared before the first cells evolved?
A.protists
B.Eukaryotes
C.Archaea
D.protobionts
Answer:b
Explanation:
because it is
Cytokinesis in animal cells differs from mitosis in plant cells in that animal cells do not form __________.
a contractile belt
a cell plate
centrosomes
centrioles
Answer:
cell plate
Explanation:
animal cells dont have this capacity
Answer:
2) a cell plate
Explanation:
a plant cells do not have centrioles
Plants must form a cell plate because they have cell walls.
Which best describes a bird’s role as it eats seeds?
parasite
predator
habitat
niche
Answer: niche
I hope this helps :)
Answer:
niche
Explanation:
Interesting Facts (don't tell me definition cuz I already know it) about xylem, at least one
Answer:
Its cells have thick, hard walls.
Explanation:
Answer:
-xylem cells are long tracheary elements that transport water.
-dead cells are similar like pipes, hollow and rigid.
Saved
Which of the following is a piece of empirical evidence supporting evolution?
Question 1 options:
Mycology
Progression of traits
Asexual reproduction
Biogeography
Question 2 (5 points)
Saved
What were the focus point of the finches that allowed Darwin to observe significant variations?
Question 2 options:
Feathers
Eyes
Beaks
Claws
Question 3 (5 points)
What happens to a population when it's larger than the available resources can accommodate?
Question 3 options:
The environment will produce more nutrients and resources to support the population.
All of the organisms in that population will die.
The organisms who need fewer nutrients will support the organisms who need more.
The organisms not well suited for that environment won't survive.
Question 4 (5 points)
Which of the following terms means that the organisms are structurally and functionally related?
Question 4 options:
Homologous
Analogous
Archaic
Vestigial
Question 5 (5 points)
What did the peppered moths signify in evolution?
Question 5 options:
Organisms are constantly changing, but they're only driven by internal changes.
Environmental factors can change which organism is best suited for survival.
The environment always has a detrimental effect on organisms.
Human behavior is the main driver behind artificial selection.
Question 6 (5 points)
A fossil record for whales demonstrates the evolution from one whale into two new whale species. Why is this supporting evolution?
Question 6 options:
The fossil record shows that the structure of the whale is changing over time, which is a requirement of evolution.
The fossil record shows that there are large splits in the development of new species, supporting macroevolution.
The fossil record shows that multiple species of whales have converged into one species because of best fit.
The fossil record captures every change in a species that leads to a new species.
Question 7 (5 points)
An organism has the allele frequency of a = 0.4 and b = 0.3. What's the frequency for allele c?
Question 7 options:
c = 0.3
c = 1.0
c = 0.0
c = 0.4
Question 8 (5 points)
Which of the following is/are not a condition affecting the Hardy-Weinberg equilibrium?
Question 8 options:
Genetic drift
Natural selection
Mutation
Recessive traits
Question 9 (5 points)
How do mutations occur?
Question 9 options:
Mutations occur through a negative change within that organism's DNA.
Mutations occur through the intentional alteration of amino acids.
Mutations occur randomly through changes in DNA.
Mutations occur as directed responses to changes in the environment.
Question 10 (5 points)
In polygenic traits, when the bell curve distribution of traits moves to one end of the curve because of a preference for best fit of that trait, what's this shift called?
Question 10 options:
Disruptive selection
Stabilizing selection
Directional selection
Nonjunction selection
Answer:
1. Biogeography
2. Beaks
3. The organisms not well suited for that environment won't survive.
4. Homologous
5. Environmental factors can change which organism is best suited for survival.
6. The fossil record shows that the structure of the whale is changing over time, which is a requirement of evolution.
7. 0.03
8. Recessive traits
9. Mutations occur randomly through changes in DNA.
10. Directional selection
Explanation:
hope this helps
Answer:
1. Biogeography
2. Beaks
3. The organisms not well suited for that environment won't survive
4. Homologous
5. environmental factors can change which organism is best suited for survival
6. the fossil record shows that the structure of the whale is changing over time which is a requirement of evolution
7. c=0.3
8. recessive traits
9. mutations occur randomly through changes in DNA
10. directional selection
11. the name must include the genus and species of the new organism. it must be written in italics with the species name in lowercase.
12. a clade is a monophyletic grou[ing in which all the organisms stem from the same branching point
13. molecular systematics
14. it focuses on simple and obvious connections
15. Plantae, protista, and fungi
16. we don't have every organism that existed identified in the fossil record
17. Mass extinction
18. Hadean
19. Punctuated equilibrium
20. Endosymbiotic theory
21. Cell receptor
22. Attachment, entry, replication, copies made, exit
23. Lytic
24. Viruses and prokaryotes both adapt in response to their environments
25. Membrane-bound organelles
26. Liquid
27. they don't exhibit cell specialization
28. Plasmodium protist
29. Spores
30. Mycotoxicosis
from Penn Foster
// PLEASE ANSWER //
How are plants called epiphytes adapted to living in the understory of a rainforest?
a.) They have waxy leaves.
b.) They lose their leaves in some seasons to adapt to harsh temperatures.
c.) They are able to use moisture from the air.
Answer: The answer is (A), they have very waxy leaves.
Explanation:
Answer:
The answer is (A)
Explanation:
ANSWER FOR BRAINLIEST
Sally and Maria were running around the track during PE. They were not happy and decided to stop and rest once they got to the bleachers. After a 10 minute rest, they started running again, but Sally tripped and fell. At what time during their run did Sally fall for a minute?
A) at 4 minutes
B) at 14 minutes
C) at 15 minutes
D) at 20 minutes
Answer:
At fifteen mins
Explanation:
The line becomes straight for one min at the fifteen min marker.
Qickly Answer this
Check all that are TRUE about biodiversity. *
Ecosystem diversity is the number of different kinds of ecosystems.
Depending on the ecosystem, some species can unravel the whole ecosystem if the die.
Species diversity is the number of species in that ecosystem.
Biodiversity is not important because we are humans and we don't need are these other organisms on Earth.
Diversity within a species increases genetic diversity.
Other:
Answer:
A. B. D.
Explanation:
Do Zebras reproduce asexually or sexually or both?
Do Giraffes reproduce asexually or sexually or both?
I will mark as brainleist!
Happy Friday! thank you
Answer:
zebra: sexually
giraffes:sexually
Explanation:
Have a great day ;3
Answer: Will for the Zebra it's both because the males ability is to reproduce but at a young age they can be sexually. Giraffes on the other hand reproduce asexually.
Explanation: this was a weird question that I can say but hopefully this was help to you.
All cells have a ____ surrounding them
All cells have a plasma membrane, ribosomes, cytoplasm, and DNA. The plasma membrane, or cell membrane, is the phospholipid layer that surrounds the cell and protects it from the outside environment. Ribosomes are the non-membrane bound organelles where proteins are made, a process called protein synthesis.
explain how toothpaste works in cleaning teeth and preventing dental caries
Answer:
It has special items in the substance that are specialized for whitening and preventing things such as cavities.
Explanation:
Answer:
Toothpaste protects our teeths from unwanted bacteria in our mouth. It promotes oral hygiene.
It removes the food from the teeths which we have after the meal and it also prevents tooth decay.
hope it helps!
Which of these are found in the excretory system?
O A. Myofibrils
B. Villi
C. Nephrons
D. Osteoblasts
1.Earth spins on its ___________________________ (4 Points)
Answer:
axis once in every 24-hour day
HELP QUICKLY The small nucleus of a paramecium is involved in a reproductive
process called conjugation.
a. true
b. false
Answer:
Is true
Explanation:
In paramecium,conjugation is a form of sexual reproduction.
Where does carbon cycle occur?
Answer:
On Earth, most carbon is stored in rocks and sediments, while the rest is located in the ocean, atmosphere, and in living organisms. These are the reservoirs, or sinks, through which carbon cycles.
Explanation:
hope this helps
Answer: sedimentary rocks where most of the earths carbon is stored
Explanation: hope this helped
HEEELP MEEEEEThe following are microscope images of cells going through a cell division process. Use your knowledge on the topic to put the images below in an order that makes sense. In the space beneath the photos write a justification for your order
(USE THE PHOTO BELOW)
______ ______ ______ ______ ______ ______
1 2 3 4 5 6
Identify the six different phases by name. Record characteristics that you used to determine what the order is for each phase. (how do you know which is which)
A- Prophase
B- Cytokinesis
C-Interphase
D- Telophase
E- Metaphase
F-Anaphase
What is cell cycle?A cell's growth and division are accompanied by a sequence of processes known as a cell cycle. A cell spends the majority of its time in what is known as interphase, where it develops, duplicates its chromosomes, and gets ready to divide. The cell then exits interphase, goes through mitosis, and finishes dividing.
Mitosis consists of four basic phases: prophase, metaphase, anaphase, and telophase.
The chromosomes shorten and thicken during prophase. Chromosomes align in the center of the cell during metaphase. Chromatids split off at the centromere and migrate to opposite poles during anaphase. Telophase: Following the reorganization of nuclear envelopes around each cluster of chromosomes, two nuclei are created.
Learn more about mitosis, here:
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When a person is frightened by a wild animal, what organ systems immediately become active?
A. endocrine and circulatory systems
B. Nervous and excretory systems
C. Digestive and circulatory systems
D. Respiratory and integumentary system‘s
Answer:
C.
Explanation:
Can someone please do this
Answer:
i have this worksheet let me get it
Explanation:
Drag each label to the correct location on the diagram. Each label can be used more than once, but not all labels will be used.
The diagram shows some of the steps in the flow of energy through an ecosystem. The arrows represent the transfer of energy. Label each
arrow with the type of energy being transferred.
chemical
electrical
thermal
radiant
nuclear
Answer/Explanation:
=> The first arrow linking the sun and the plants represents transfer of RADIANT energy. The sun through its sunlight radiation provides energy for autotrophs such as plants to manufacture their food.
=> The second arrow from plants to rodent represents transfer of CHEMICAL energy. The chemical energy that is manufactured and stored between the molecules of the plant as food, is transferred to rodents as primary consumers.
=> Third and fourth arrow from the rodent to owl, and from the rodent to the wolf both represents CHEMICAL energy transfer.
=> Fifth arrow from the wolf to the surroundings show heat loss during metabolic processes in the wolf's body which represents THERMAL energy transfer from the wolf to the environment.
=> The width arrow from the wolf to decomposers also show THERMAL energy transfer as the wolf dies and decay, Hera is released.
The arrows represent the transfer of energy which are described as follows:
1. Radiant energy
2. Chemical energy
3. Chemical energy
4. Chemical energy
5. Thermal energy
Radiant energy is transferred through the first arrow connecting the sun and the plants. Sunlight gives autotrophic organisms like plants the energy they need to produce food. The transfer of chemical energy from plants to rodents is shown by the second arrow. Rodents are the main consumers of chemical energy that is produced and stored as food between plant molecules.
The third and fourth arrows, from rodent to owl and from rodent to wolf, respectively, both indicate the transmission of chemical energy. The fifth arrow shows heat loss from the wolf's body during metabolic activities, indicating thermal energy transfer from the wolf to the surrounding environment.
Learn more about energy, here:
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Mitochondria is where takes place
Answer:
photosynthesis is the answer
Glycolysis thats the answer to your problem