Answer: A helium balloon rises because helium is less dense than air. A balloon filled with regular air, however, is denser than the surrounding air because the air inside it is under pressure.
Explanation: i looked it up for you so i could make sure it was right for you hope this helps!!!!!!!!!!!
16. Which genotype represents a recessive trait? *
1 point
ee
Ee
EA
EE
Answer:
ee
Explanation:
in order for the genotype to represent a recessive trait both alleles ( letters ) have to be lowercase hence the answer is ee
Which of the following statements is
FALSE?
•Disposal of radioactive waste is easy & poselittle risks to the environment.
•Radioactive waste still emit radioactivity.
•Radioactive materials can cause mutations.
•Disposal of radioactive waste is easy & poselittle risks to the environment.
HURRY PLS. What kind of bond forms between the oxygen atoms of one water molecule
and the hydrogen atoms of another water molecule?
A. Hydrogen
B. Polar covalent
C. lonic
D. Metallic
Entre as consequencias decorrentes do aumento da temperatura dos mares e dos oceanos, podem ser citados o derretimento das calotas polares, a diminuição no nível de oxigênio presente neles e a morte de corais. Escolha um desses exemplos e explique a relação entre ele e o aquecimento de mares e de oceanos.
Answer:
Death of coral reefs occurs due to increasing the temperature of the ocean.
Explanation:
Death of coral reefs occurs due to increasing the temperature of the sea and ocean because warm water killed the algae attached to the surface of coral reefs which causes bleaching of coral reefs. This coral reefs provides habitat as well as food to thousands of animals present in the ocean ecosystem so the destruction of coral reefs causes death or migration of animals from that region.
Which of the following best describes how the human nervous system and
the endocrine system work together?
O A. The nervous system signals the endocrine system to release
hormones in response to a stimulus.
O B. The nervous system responds to a stimulus, and the endocrine
system returns the body to a relaxed state.
O C. The endocrine system signals the nervous system to send out
nerve impulses in response to a stimulus.
D. The endocrine system responds to a stimulus, and the nervous
system returns the body to a relaxed state.
The nervous system usually signals the endocrine system to release hormones in response to a stimulus. The correct option is A.
What is endocrine system?The endocrine system, which is made up of all of the body's different hormones, regulates all physiological processes in the body from gestation through adulthood and to old age.
This regulation also include brain and nervous system development, reproductive system growth and function, metabolism, and blood sugar level.
The endocrine system and the nervous system collaborate to influence many aspects of human behavior, together with growth, reproduction, and metabolism. And the endocrine system is crucial in the regulation of emotions.
In response to a stimulus, the nervous system basically signals the endocrine system to release hormones.
Thus, A is the correct option.
For more details regarding endocrine system, visit:
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How are proteins and nucleic acids related?
Answer:
The relationship between Proteins and Nucleic acids is that both find their application in the gene expression process of the living body. During the gene expression in every living cell of any organism, it is seen that the nucleic acids code for amino acids to create proteins
Answer:
The nucleic acids in made up of DNA and RNA. The DNA encodes the information the cell needs to make protein, while RNA participates in protein synthesis
Which of the following is the most likely function of this shape?
A. To attract birds to nest in the branches
B. To keep cool during the summer
C. To allow snow to fall rather than get caught in the branches
D. To detect the environment
Answer:
The answer is C
Explanation:
. When an animal is thirsty, it responds by -
eating food
drinking water
blinking rapidly
sweating excessively
eating food
drinking water
blinking rapidly
O
sweating excessively
when an animal is thirsty, it responds by drinking water
Which of the following facts is the best evidence that humans and salamanders had a common ancestor?
A) Both species eat meat
B) Both species have pharyngeal arches and slits when they are embryos
C) Both species can swim
D) Both species have skin
Answer:
B
Explanation:
Look up an image of a human embryo v. a salamander embryo if you look carefully you'll see the arches and slits.
Which of the following best describes the producers in a terrestrial food web?
They are unaffected by decomposers.
They obtain their energy from consumers.
They convert energy from the sun to chemical energy.
They are at the top of the energy pyramid.
Answer:
Explanation:A
Help me pleaseeeeeeee
Answer:
D
Explanation:
the stuffs in the middle are the shared electrons
What are the two sensory functions of ears?
Answer:
obviously listening and hearing
What is the main function of leaves?
A. Leaves provide support for growth and a place to store food.
B. Leaves provide a place for photosynthesis to occur.
C. Leaves absorb water and minerals and transport nutrients to the stem.
D. Leaves create a barrier that prevents water in the plant's tissues from evaporating.
Answer:
B. Leaves provide a place for photosynthesis to occur.
-------------------------
hope it helps..
have a great day!!
Answer:
B. Leaves provide a place for photosynthesis to occur.
Explanation:
The main function of leaves is to provide a place for photosynthesis to occur.
As you increase the temperature, the rate of photosynthesis increases and then decreases.
True
False
Answer:
true
Explanation:
Because plants need sunlight to do photosynthesis.
D 9. Humans are unique in their
abilities.
survival
walking
complex language
resourcefulness
hunting
Answer:
Humans are unique in their resourcefulness ability.
10 Which of the following are examples of natural selection?
SELECT ALL THAT APPLY
A Domesticated dog breeds
B Giraffes developing longer necks over time
A non-poisonous snake mimics a poisonous snake
D Breeding two racehorses that are fast and strong
E Genetically modified soybean
F Galapagos finches choosing mates with stronger and longer beaks
G Allowing only the cows that produce the most milk to reproduce
H Peppered moths choosing mates with darker colors
Answer:
B Giraffes developing longer necks over time
A non-poisonous snake mimics a poisonous snake
F Galapagos finches choosing mates with stronger and longer beaks
H Peppered moths choosing mates with darker colors
Explanation:
Hope this helps
The examples of natural selection are as follows:
Giraffes develop longer necks over time.A Non-poisonous snake mimics a poisonous snake.Galapagos finches choose mates with stronger and longer beaks.Peppered moths choose mates with darker colors.Thus, the correct options for this question are B, C, F, and H.
What is Natural selection?Natural selection may be defined as the methodology through which organisms that are better adapted to their environment tend to survive and reproduce more than those less adapted to their environment. The concept of Natural selection was first proposed by Charles Darwin.
According to the question, due to the requirement of long necks in order to get food from longer trees, Giraffe develops longer necks. In order to protect themselves from predators, a non-poisonous snake mimics a poisonous snake.
On Galapagos island, if there were variations in the finches of the bird, they get a variety of food resources in order to get more nutrients and energy for survival and reproduction.
Therefore, the correct options for this question are B, C, F, and H.
To learn more about Natural selection, refer to the link:
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pattern of lines that intersect maps
Answer:
Grid
Explanation:
When might self-fertilization be beneficial for a plant? When there are too many dioecious individuals in a population, self-fertilization becomes beneficial for a monoecious individual. When environmental conditions are harsh, such as a plant growing in nutrient-poor conditions, or when herbivores have damaged the plant, plants may self fertilize. When environmental conditions are perfect, plants can afford to self-fertilize. Only plants with perfect flowers are capable of self-fertilization.
Answer:
Only plants with perfect flowers are capable of self-fertilization.
Explanation:
Self-pollination is the process that allows plants to fertilize themselves. This process is very beneficial when a plantation has plants with few flowers or when the plants are spaced far apart.
However, only plants with perfect flowers can self-fertilize. This is because for self-fertilization to occur, the plant needs to have flowers that present the male and female reproductive organs, which allows the same flower to produce pollen that will be sent to its own ovary. Only perfect flowers have male and female reproductive organs at the same time.
49. A test for starch in variegated leaves shows the importance of
A. sunlight
C. water
B. oxygen
D. chlorophyll
Answer:
D. Chlorophyll
Explanation:
Chlorophyll is important as it allows the plant to convert carbon dioxide and water into glucose.
1) List three properties of rocks.
Answer:
three properties of rocks are;
they are hardthey have shape and sizethey have different texture.Answer:
Their shapes vary
They are hard
They have different textures
Explanation:
Hope it helps
Have a great day :)
What is the boundary between the earths lower mantle and the upper mantle called ?
Answer:
i have trusted my best to answer
Explanation:
Edit
The upper mantle of Earth is a very thick layer of rock inside the planet, which begins just beneath the crust (at about 10 km (6.2 mi) under the oceans and about 35 km (22 mi) under the continents) and ends at the top of the lower mantle at 670 km (420 mi). Temperatures range from approximately 200 °C (392 °F) at the upper boundary with the crust to approximately 900 °C (1,650 °F) at the boundary with the lower mantle. Upper mantle material which has come up onto the surface is made up of about 55% olivine, 35% pyroxene and 5 to 10% of calcium oxide and aluminum oxide minerals such as plagioclase, spinel, or garnet, depending upon depth.
4) Discuss how our lives on Earth are directly related to our relationship and positioning with the Sun in our Solar System.
Answer:the relationship with the sun and the solar system is the same relationship to all physical bodies in which we are living at a speed governed by our perception at our vantage point in relation to how much gravity is acting upon us. Example: Say you were to fall into a black hole. At the point of no return at the event horizon your time would begin to slow down as seen from an outsider watching you fall. This will occur until to that observer sees you stop entirely in time. You however fall faster as faster but for ever. Till time is over. So all things are relative to each other in only one absolute way. Gravity control observed time.
Explanation:
Which pronoun correctly completes this sentence?
Ingrid tells her friends about rugby, and _______ tell her about football.
their
them
they
themselves
Answer:
Hello,⊕ Which pronoun correctly completes this sentence?Ingrid tells her friends about rugby, and they tell her about football.
;))
Answer:
They
Explanation:
I got it right on my test
Alma is walking in a park. Suddenly, a wild dog charges towards her. Alma is frightened. The ____ starts to respond by increasing her heart rate and dilating her pupils. After running for a few minutes, Alma realizes that the dog has fallen far behind. At this point, her ____ starts working to relax her body slowing down her heart rate and constricting her pupils.
1.
A. parasympathetic nervous system
B. Somatic nervous system
C. Sympathetic nervous system
2.
A. Parasympathetic nervous system
B. Somatic nervous system
C. Sympathetic nervous system
Drag each label to the correct location on the table.
Sort the examples into proper mechanisms of reproductive isolation. PLEASE HURRY! THIS IS TIMED AND I WILL MARK BRAINLIEST (OR HOWEVER YOU SPELL IT)!
Answer:
first one is pre second ones pes third one is pes fouth one is pre
Explanation:
ur welcome
Organisms that use photosynthesis to produce organic food molecules are known as
Answer:
plants
Explanation:
plants, i hope that is the answer
If you knew you could pass a genetic disease to your children, would you want to be allowed to use gene therapy to “fix” the gene before the children were born?
Answer:
It depends on if the gene therapy would do something to the gene that could harm you. If there is no harm to you or the children then It seems logical to do it so the children do not have the disease. Because it is a genetic disease, if you "fix" it there is a higher chance that the children will not pass it on to their kids
Explanation:
Pedigree Studies
Part A. Reading a Pedigree
Using Figure 1 answer the following questions.
1) What are the sexes of the oldest and
youngest children?
II
2) What is the relationship between 1-1 and
II-3?
1 2
3
4
Figure 1
3) Who has the trait and who does not?
4) Would you expect this pedigree to be for a trait that is dominant or recessive? Explain
your answer.
Answer:
you
Explanation: thats tuff bro
How are genes and proteins related?
O A. Proteins are used to build genes.
O B. Genes contain the code to make proteins.
O C. Proteins are made of parts of genes.
O D. Genes and proteins are both made of DNA.
SUBMI
Answer:
Genes contain the code that makes proteins
As well i think genes and proteins are both made of DNA
Which does not contribute to
genetic variation?
A. chromosome number
B. crossing
over
C. meiosis
D. random mating
D Random mating
Cuz everything else leads to the way you are variated
