Answer:
The out of Africa theory states that Homo sapiens began in a single geographical area and spread out from there.
Explanation:
A is correct because the ''out of Africa theory'' suggests that the Homo sapiens began as a species in Africa and from there it gradually spread out on the other continents across the world.
B is not correct because the ''tectonic theory'' is a theory that has nothing to do with the Homo sapiens species, but it is a theory about the movement of tectonic plates.
C is not correct because the multi-regional theory suggests that the Homo sapiens evolved into multiple regions simultaneously, not in one region only.
PLEASE HELP GIVING BRAINLIEST
A.What is the definition of an animal?
B.Why can't all animals perform photosynthesis?
C.What are two examples of photosynthesizing animals?
D.How do these animals carry out the process of photosynthesis?
E.Are they born to carry out photosynthesis or do they develop the ability over their life span?
F.Do these animals eat in addition to carrying out photosynthesis?
G.What are the similarities and differences between these animals?
H.Why is the ability to perform photosynthesis an advantage to these animals?
I.How does the discovery of the animals further scientists' understanding of the relationships between
plants and animals?
Answer:
A) a member of the kingdom Animalia, and is typically characterized by a multicellular body, specialized sense organs, voluntary movement, responses to factors in the environment and the ability to acquire and digest food.
B) Because only plants can..?
C) Plant, Algae
D) They use sunlight
E) Yes
F) Yes
G) They're both living
H) So they can live
I) They are common
Explanation:
This is the best i could do, have a nice day, hope it helps
Describe Genotypic Species Concept
Answer:
Genotype is the collection of genes responsible for the various genetic traits of a given organism. Genotype refers specifically to the genes, not the traits; that is, the raw information in an organism's DNA. Genotype is determined by the makeup of alleles, pairs of genes responsible for particular traits.
Plz mark me as brainliest if the answer helps u
What can happen if there is an error in the process of mitosis ????
Question multiple Choice with a pairs)
01.05 MC
Which situation shows where potential energy and komencemegy are balans
A stopped bicycle
A roller coaster car going uphill
A car moving at a steady speed
Arunner slowing down
Cells harvest energy from food molecules by _____.
photosynthesis
respiration
fermentation
Answer:
Respiration
Explanation:
Respiration is the process by which cells obtain chemical energy
Which type of cell have membrane bound organelles?
prokaryotes
Or
eukaryotes
Answer:
eukaryotes
Explanation:
Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes. However, unlike prokaryotic cells, eukaryotic cells have: a membrane-bound nucleus. numerous membrane-bound organelles (including the endoplasmic reticulum, Golgi apparatus, chloroplasts, and mitochondria)
Eukaryotic cell have membrane bound organelles. Thus, the correct option is eukaryotic cell.
What is eukaryotic cell?The eukaryotic cell is known as the fully developed and it contain membrane bound organelle. The multicellular organism are made up of the eukaryotic cell and they contain cell organelle it contain mitochondria, ribosomes, RNA, DNA, golgi appratus, and nucleus as well as other cell organelles.
Multicellular organisms are made up of eukaryotic cell and the eukaryotic cell is consist of different cell organelles to carry out different functions in the cell. The multicellular organisms perform different life process in different cells because they have specific cell for specific function.
Amoeba has known as an unicellular organism in which all the activities related to life carried out in a single cell. The example of multicellular organism is human beings and other animals as well plants are also came in the category of multicellular.
Therefore, Eukaryotic cell have membrane bound organelles. Thus, the correct option is eukaryotic cell.
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NEED HELP ASAP
Which of the following is a result of cohesion?
A)movement by osmosis ***
B)surface tension
C)the bent structure of a water molecule
D)a water droplet on a spiderweb
Which of these is a distinguishing characteristic between the domains Bacteria and Archaea?
Answer:
This question lacks options, the options are:
a. Their size
b. The chemical composition of the cell wall and cell membrane
c. Their ability to grow at high temperatures
d. The shape of their mitochondria
The answer is B
Explanation:
Living organisms has been classified into three domains namely; Eukarya, Archaea, and Bacteria. However, domians Archaea and Bacteria are most similar in the sense that they both have cells without a membrane-bound nucleus, hence, they are both PROKARYOTIC. Also, they are both strictly unicellular organisms.
Despite these similarities, differences exists between them. One major difference is in the chemical composition of the cell wall and cell membrane. The cell walls of bacteria cells have a unique structure called PEPTIDOGLYCAN. This is absent in the Archeae group. Also, the cell membrane of Archeae is made up of ether linked lipids compared to the ester-linked lipids that constitutes bacteria cell
why genetic factor is very important in crop production
Answer:
The wise use of crop genetic diversity in developing improved crops can contribute significantly to protecting the environment. Crop varieties that are resistant to pests and diseases can reduce the need to apply harmful pesticides. More vigorous varieties can better compete with weeds, reducing the need for applying herbicides .
Explanation:
What is a predator? Give two examples.
PLEASE
Answer:
Some very common examples are a lion (predator) and a zebra (pray) or a bear (predator) and a salmon (pray).
Explanation:
A predator is an organism (plant or animal) that eats another organism (plant or animal). The prey is the organism that is eaten by the predator. Which means the predator is the thing eating the pray.
Answer:
A Predator can not be eaten but eats the others and a predator is probaly not afraid to get in a fight with another animal
Explanation:
Do you think water pollution has a greater effect on humans than air pollution?
Answer:
I think they are both as bad.
Explanation:
I say this because air pollution can cause water pollution but the same goes the other way around.
Answer:
No, air pollution is worse.
Explanation:
Whilst water pollution would kill s over time from dehydration, the air pollution would kill us first. Air is how we breathe and that would kill us before the water did. Over all, air pollution would kill us first.
____________________ helps make animal membranes more rigid.
Answer:
fatty-acid makes animal membranes more rigid
Explanation:
Answer for number 7 please! 30 points! Actually 60 point! :)
Answer:
i need a better photo
Explanation:
Certain bacteria change nitrogen gas into a usable form in a process called
Certain bacteria change nitrogen gas into a usable form in a process called nitrogen fixation.
What is nitrogen fixation?Nitrogen fixation process is important for the growth of plants, as nitrogen is an essential component of many plant nutrients. Nitrogen fixation is primarily carried out by bacteria in the genus Rhizobia, which form symbiotic relationships with certain plants, such as legumes. The bacteria live in nodules on the roots of these plants and convert atmospheric nitrogen into a form that can be used by the plant.
This process is also important for the overall health of the soil, as it helps to increase the availability of nitrogen for other organisms in the ecosystem.
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Plz help don’t know which one.
Answer:
I think it is "serve a different function"
Explanation:
Living organisms interact in a variety of ways for a variety of purposes. The imperial shrimp rides on sea cucumbers
as they travel underwater. This interaction enables the shrimp to use little to no energy to move between the areas in
which it feeds. The sea cucumber is typically unaware that the shrimp is using it for transport. Which type of interaction
occurs between the imperial shrimp and its host organism?
mutualism
commensalism
parasitism
competition
Answer:
Commensalism
Explanation:
Answer:
Commensalism
Explanation:
A mollusk's head may have tentacles for?
It covers the top of the body and encloses the internal organs. Most mollusks have a distinct head region. The head may have tentacles for sensing the environment and grasping food. There is generally a muscular foot, which may be used for walking.
which part of the carbon cycle breaks down carbohydrates into carbon dioxide and water
Resipration
Ersion
Decomposition
Answer:
Respiration
Explanation:
Respiration is a component of the carbon cycle which breaks down carbohydrates into carbon dioxide and water.
Respiration is an aerobic process that takes place in the presence of oxygen.
It is a catabolic process in which energy rich compounds are broken down. In this process, oxygen combines with carbohydrates to produce carbon dioxide and water with the release of energy. Carbohydrates is rich and embedded with energy.Cellular respiration is the process that releases energy for living organisms.
People plz help me!! I’ll give u brainiliest
whats a biosphere, and how does it work?
Answer:
The biosphere is a layer of the Earth where all life exists.
Explanation:
cells make up......... A:organs, which makes up tissue, which make up organ systems, which make an organism. B:tissue, which makes up organs, which make up organ systems, which make an organism. C:tissue, which makes up organisms, which make up organ systems, which make an organ. d:tissue, which makes up organ systems, which make up organs, which make an organism. will make brainliest
Answer:
it's B
Explanation:
cells make up tissue which makes up organ, combination of organs make organ system and the organ system makes up an organism.
Answer:
b
Explanation:
what does the process of fertilization create
Answer:
A zygote
Explanation:
Fertilization is the process through which two gametes fuse to create a new organism. In humans, an egg and a sperm fuse to create a new cell called a zygote which develops into a fetus.
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1) In order to see the sides of underwater hills, scientists use _____ to get an angle view of the ocean floor.
2)You would expect to find beaches along the continental ______.
3)Caverns, lakes, sinkholes and springs are types of _____ formation.
4)A ____ is found on the sea floor of the continental slope.
A student groups different types of cells as shown.
Which table headings should the student use for the two groups?
1. Animal Cells
2. Plant Cels
1. Prokaryotic Cells
O
2. Eukaryotic Cells
1. Mobile Cels
2. Motile Cells
1. Fungal Cells
2. Bacterial Cells
Prokaryotic and eukaryotic cells are the table headings which the student should use for the two groups respectively.
What are Eukaryotic cells?These are cells which have a nuclear membrane while prokaryotic cells lack it.
The first picture contains protozoa which is a prokaryote while the second contains plant anf animal cells which makes them eukaryotes.
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People playing basketball game in a gymnasium make up a closed system with 17,125 J of energy. At the beginning of the game, the system has 16,250 J of ME and at the end it has 1,135 J of ME. How much total energy was transformed into thermal energy during the game?
Answer:
15,115 J
Explanation:
Answer:
15,115
Explanation:
Just did it on Apex
Why do you think plants and animals have different types of cells?
Answer:
cause plants do not move from there places and need to make there own food so he can survive.. that is why they need a cell with all necessary and animals can hunt or eat plants which means he just need the cells to produce energy and movements
Explanation:
Plants and animals have different types of cells because they possess different characteristics, modes of nutrition, adaptation, metabolic activities, etc.
What are Plant cells?Plant cells may be defined as the type of eukaryotic cell that has a well-defined nucleus and other membrane-bound cell organelles. These cells are the basic unit of life in organisms of the kingdom Plantae.
Animal cells are also of eukaryotic nature but both shares a huge difference in the composition and manufacturing of cells. Plants have to synthesize their own food with the help of sunlight so they possess chloroplast while animal cells are of the heterotrophic mode of nutrition where they derive their food from plants and their products.
Plants are typically immobile in nature so they have required some sorts of cells that provide them stability in their survival. While animals need some motility cells like bones and other tissues that provide the movement.
Therefore, on the basis of structural dissimilarities, mode of nutrition, adaptation, metabolic activities, etc. plants, and animals have different types of cells.
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what do animal cells have in it
Answer:
animal cell are typical of the eukaryotic cell, enclosed by a plasma membrane and containing a membrane-bound nucleus and organelles
NEED HELP ASAP * I THINK IS MY ANSWER
A carbon atom can form many different shaped molecules when bonded to other atoms. Which of the following best explains why this is true?
A)It has four valence electrons.
B)It forms hydrogen bonds.
C)It is an ion.*
D) It is an organic element.
Answer:
it has four valence electrons
Explanation:
Most of the ocean floor is made of: granite quartz basalt silicon?
Answer:
basalt
Explanation:
Answer:
basalt
Explanation:
Explain how soil formation is helped by biotic components through primary succession.
Answer:
Please find the explanation below
Explanation:
Primary succession is a type of succession that occurs in an area with no previous community. It usually contains bare rocks, which are grown upon by certain living organisms (biotic components) called PIONEER SPECIES. These organisms, which include lichens and mosses, colonize the bare rocks and contribute to the formation of soil by the gradual disintegration of the rock particles.
These biotic components (living organism) also help to enrich the soil being formed as they add organic matter, which serve as nutrients, when they die and decompose. The actions of these living organisms on the formation of soil enables other organisms to easily colonize the area.