Answer:
A, B, C
Explanation:
One is a channel, one is a carrier, the other is simple
Am I right? Please someone help me
Answer:
A. 17,100
Explanation:
The half life of carbon-14 is around 5,700 years. When the shell contains 50% of its original carbon-14, 5,700 years have passed. 25% means another 5,700 years have passed, meaning 11,400 years in total have passed. 12.5% means another 5,700 years have passed, meaning 17,100 years have passed in total.
The chief port of Ecuador is:
Quito
Guayaquil
Otavala
Cuenca
Of the terrestrial planets, Earth and Venus are
Which phrase best completes the sentence?
O about the same size
O different in density
O similar to gas planets
O very different in size
Answer:
A. About the same size
Explanation:
Venus is often named as Earth's twin because both worlds share a similar size, surface composition and have an atmosphere with a complex weather system. Both planets have almost the same size and density.
Hope this helps!
Earth and Venus are about the same size. So, the correct option is (A).
What is Earth?Earth is the third planet from the Sun and the only celestial object known to harbor life. Only Earth maintains liquid surface water in the Solar System. About 71% of Earth's surface is made up of ocean, which dwarfs Earth's polar ice caps, lakes, and rivers.
Earth consists of land, air, water and life where land consists of mountains, valleys and flat areas and air is composed of various gases, mainly nitrogen and oxygen. Water includes oceans, lakes, rivers, streams, rain, snow, and ice.
Venus is known as our sister planet because of the similarity in size, mass, density, and volume that both planets are believed to share a common origin at the same time from a condensed nebula about 4.5 billion years ago.
Thus, Earth and Venus are about the same size. So, the correct option is (A).
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Why do you think Leeuwenhoek named the cells he observed "animalcules"
Answer:
Using single-lensed microscopes of his own design and make, Van Leeuwenhoek was the first to observe and to experiment with microbes, which he originally referred to as dierkens, diertgens or diertjes (Dutch for "small animals" [translated into English as animalcules, from Latin animalculum = "tiny animal"]).
Leeuwenhoek named the cells he observed originally as dierkens, which is the Dutch word for small animals, and translated to English as animalcules.
Hope it helps :)
Though I may be wrong :( ...
Have a great day!
Which of the following statements describes an interspecific zone?
Answer
Which of the following statements describes an interspecific zone? A. This zone measures 20,000 feet to 36,000 feet below the surface, and has a name ...
Explanation:
THE ONE ONLY !
The main part of a cell that maintains homeostasis is the ______________.
A. The nucleus
B. Cell membrane
C. The head
D. The cytoplasm
Answer:
B. Cell membrane
Explanation:
Gametes (SEX CELLS) have ... A. half the number of chromosomes found in the body cells B. twice the number of chromosomes found in body cells C. two sets of chromosomes
Answer:
A. Half the number of chromosomes found in the body body cells
Explanation:
Somatic (body cells) have 2 sets of chromosomes, while gametes have 1 set of chromosomes. Sperm has one set, and an egg has one set allowing both to fuse to create a new organism.
Answer:
[tex]\boxed {\boxed {\sf A. \ Half \ the \ number \ of \ chromosomes \ found \ in \ the \ body \ cells}}[/tex]
Explanation:
Gametes are sex cells, such as the egg and sperm. They are used in sexual reproduction to produce offspring.
The sex cells are produced during meiosis. The DNA or genetic material is replicated, then the cells divide twice. After this, four haploid cells are produced with half of the genetic material. For example, human body cells have 46 chromosomes but sex cells have 23 chromosomes.
They contain half the genetic material for an important reason. During fertilization, an egg and a sperm fuse. Each one contributes half of the genetic material from the mother or father to create one complete set for the offspring.
Gametes have half the number of chromosomes in body cells and choice A is correct.
In feedback inhibition, does an enzyme’s substrate attaches to an allosteric site?
Answer:
They bind to an allosteric site which induces a conformational change that increases the affinity of the enzyme's active site for its substrate. This increases the reaction rate.
which statement best summarizes the development of the atomic theory over time
which kingdom has 2 kingdoms that are all unicellular?
Answer: Prokaryotes, archaea, protists, fungi, algae.
Explanation:I don’t think there are any single celled organisms that are today classified as animals. So basically I just left the animal kingdom out. Both metazoans and sponges are for the most part multicellular.
27)
Desertification is the process of converting arable forests or grasslands into unusable land that lacks fertile soil and sufficient
moisture. Climate change can contribute to desertification of land across the globe. Each of these is an example of climate change
leading to desertification EXCEPT
A)
Higher temperatures on a global scale lead to higher levels of evaporation
and less moisture in soils.
B)
Higher evaporation can lead to soil salinity levels increasing in certain
areas of the globe.
C)
More frequent droughts in Southern Europe and other areas will reduce the
soil content
D)
Increased temperatures will decrease the growth of plants on a global
scale.
Answer:
jj is good
Explanation:
Which three structural zones overlap with the mantle ?
lithosphere, asthenosphere, mesosphere
What percentage of DNA comes from
each parent during sexual reproduction?
Answer:
50 %
Explanation:
So, each sperm contains 50% of the father's genes and each egg contains 50% of the mother's genes. This makes gametes different from other cells in the body
Answer:
50 from each parent is the correct answer
I AM GIVING OUT BRAINILEST
Answer:
blue
Explanation:
bobcats eat rabbits
Help will give brainlest 100 points
Answer:
the answer is A I'm pretty sure
HELP ASAP!!!
What concept does Hubble's Law most concern?
A. energy lost over time across the universe
B. growing distance between galaxies
C. how stars recycle energy and matter
D. how the universe will eventually end
Hubble's Law most concern with growing distance between galaxies. Thus option B is correct.
What is Hubble's Law ?Hubble’s law refers to the observation in physical cosmology where the movement of galaxies from the Earth at a speed that are proportional to their distance.
The velocity of the galaxy which is called as the redshift.
This laws study physical cosmology and is also known as Hubble-Lemaitre law.
After measuring recession velocity one can determine the distance of the galaxy from us by using Hubble’s equation.
Some limitations are; due to intrinsic motion of galaxies, observed velocity gets influenced and Galaxy orbit due to gravitational movements.
Hubble constant is another unit of measurement, which is used for description of the expansion of the universe. It is 160 km/s per million-light-years.
Thus option B is correct.
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More than 1.5 million species of animals have been described, yet all of them have DNA that is made of the same building blocks. This is evidence that all animals have a _________ ancestor.
Answer:
common or single is the answer
hii! i’ll give brainliest pls help
Answer:
This looks like an earthquake
Explanation:
There doesn’t seem to be very much water present in the image which would be the cause for the rest of them
Hope this helps
Answer:
Earthquake
Explanation:
First off I wouldn't say landslide because if it was a landslide in more than likely would have cracked the concrete on the floor that the people are standing on and there would be more of a mess than what is show in the picture. Next I wouldn't say tsunami depending on how frequent this disaster was, if it was a tsunami more than likely most of that rubbish would have been soaked with water in other things that were in the water as well and I wouldn't say flood either because once again nothing is soaked with water with in that picture not even the concrete that the people are standing on so I say that the most reasonable answer would be earthquake due to them being know for destroying buildings alot.
What does the "S" in S phase stand for? What occurs in S phase?
Answer:
Synthesis Phase
Explanation:
It is the phase of the cell cycle in which DNA is replicated.
which of the following cells not have specialized tasks within the organism?
a. prokaryotic. cells
b. eukaryotic cells
c. animal cells
d. plant cells
Answer:a. prokaryotic. cellsExplanation:
Question 6
The grasshopper in
this food web is
considered a
snake
frog
Mawk
shrew
• A. Producer
• B. Herbivore
• C. Omnivore
• D. Carnivore
cricket
marsh grass
catta
Grasshopper
Answer:
B
Explanation:
The grasshopper is the primary consumer so it is herbivore.
help meeeee?
write a description of the ecosystem including biotic and abiotic factors? plz
Answer:
The correct answer is - Biotic factors are any living factors and abiotic factors are anything non-living in an ecosystem.
Explanation:
An ecosystem consists of all living organisms, non-living organisms that are present in a physical environment in a particular geographical area. The physical environment consists of several factors such as landscape, pH, climate, salinity, and other factors that represent abiotic factors.
Any living organism present in an ecosystem is biotic factor Examples of biotic factors include are mammals, birds, trees, microbes, grasses, fish, bacteria, and many more.
Both animals and plants must maintain homeostasis in order to stay alive. Plants excrete
water and oxygen through the stomata (tiny holes in the leaves) as waste products of
photosynthesis, which system in the human body would this be comparable to?
a. Nervous system
b. Circulatory system
c. Reproductive system
d. Excretory system
Answer:B
Explanation:
Why human beings are complex organism ?
Answer:
Human is a complex organisms because humans are made up of trillion of cell and a lot of system and organ . Some of the major systems are blood circulatory systems, the skeletal system, the digestive system, the nervous system and the respiratory system.
Pls help!! Scientists have observed a sudden explosion in the sun followed by rapid changes in the sun's brightness. Which of these events would most likely occur due to this solar condition? (2 points) Group of answer choices increase in atmospheric pollution on Earth change in Earth's climatic pattern change in wind velocity increase in number of solar eclipses
Answer:
Change in Earth's climatic pattern.
Answer: Change in earths climactic pattern
Explanation:Got it correct on the test
What Is the location of the instructions that code for traits?
Answer:
Traits are coded for in DNA, specifically in genes.
Explanation:
DNA, as you probably already know, is made up of long sequences of nucleotides of A's, T's, C's, and G's. When transcripted into mRNA and translated into proteins in ribosomes, the order of these nucleotides signal which amino acids to produce for the protein. Proteins are extremely important and have many roles throughout the body, which means they actualize the code of DNA into physical traits. I hope this helped.
Question 4
Which characteristic is shared by all prokaryotes and eukaryotes?
A
ability to store hereditary information
B
use of cellular respiration for energy release
C
use of organelles to control cell processes
D
contain membrane-bound organelles
Answer:
A. The ability to store hereditary information.
Explanation:
Both prokaryotic cells and eukaryotic cells have DNA. In prokaryotic cells, the DNA is not contained in a membrane-bound nucleus while in eukaryotic cells, DNA is contained in the nucleus.
which of these is an example of water pollution?
a. a clear/cut forest
b. an eroded hillside
c. arid land
d. agricultural runoff
Answer:
d. agricultural runoff
Explanation:
makes most sense
The primary purpose of which human organ system is to produce hormones that regulate body functions
Identify the 2 main types of cetaceans and explain how they are classified.