Answer:
The first alligator ancestors evolved about 245 million years ago.
Explanation:
The first alligator ancestors evolved about 245 million years ago due to change in the environmental condition. crocodilians appeared about 80 million years ago during the Cretaceous period. Modern alligators has experience less changes which is closely related to their ancient ancestors and look much like to their relatives that exists about 80 million years ago. The main reason for the change in the body structure of alligator is due to change in environmental condition.
The evolution of alligators can be analyzed by sequencing samples of different species and then producing a bioinformatic analysis.
What is evolution?Evolution means descendence with some class of modification in offspring (phenotypic, genetic, etc).
Evolution can be analyzed by sequencing and comparing the linear order of nucleotide sequences between different species.In conclusion, the evolution of alligators can be analyzed by sequencing samples of different species and then producing a bioinformatic analysis.
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Si contamos con mas tecnologia ahora,por que creen que no es posible regresar de Marte si lo es regresar de la Luna
Answer:
Debido a la gravedad.
Explicación:
No es posible regresar de Marte si es posible regresar de la Luna porque la masa es un planeta que tiene una alta fuerza de atracción gravitacional en comparación con la luna que tiene una fuerza gravitacional muy baja. La luna es una estrella que tiene una fuerza gravitacional baja mientras que, por otro lado, Marte es un planeta y más grande que la luna, por lo que tiene más fuerza de atracción gravitacional en comparación con la luna y esa es la razón por la que no podemos regresar de la luna fácilmente desde el Marte en comparación con la luna.
Can you find out what the oldest evidence of multi-celled life is? Tell me about it.
Answer: the oldest evidence of multi-celled life is about 570 million years old, it was found in the west african state of gabon, thats all i know unfortunately ;/
Explanation:
Which statement accurately describes radioactive dating?
Explanation:
Radioactive dating works on the principle that a radioactive isotope can decay into the stable daughter nuclei at a constant rate. Geologist generally use the principle for half life. Half life is the time required for half of the radioactive substance to decay. This is constant for a particular element.
Question is on the image
Answer:
A and D.
Explanation:
Sharks gills are located on the side of their bodies while on the other hand, Skates have gills that are located in underneath of their mouth. In sharks , large spiracles are present on the ventral sides of shark's head whereas in Rays or Skates, spiracles are large in size and located on the dorsal side of their head. Spiracles is an external respiratory opening, located behind the eye of a cartilaginous fish.
Describe the connection between the digestive and circulatory systems (in detail)
Answer:
Explanation:(1) Digestive System gets nutrients (good) from food and hands it over to the blood and Circulatory System then carries those nutrients where they need to go. (2) Filters out waste from food and pushes it through intestines and out the body (and you know how and where it gets out).
(8 - 2) 3 – 2 ( 5 + 4) + 3 ( 6 – 1)=
Answer:735
Explanation: the reason why this is the answer because of PEMDAS….. you solve the the numbers in the parentheses first before hand then you continue such as, (6x3-2x9+3(5) which is 6x3=18 - 2 = 16 x 9 = 144 x 5 = 735
5. As blood enters the capillaries, molecules of oxygen move from the blood into the tissues of the body. Which of the following explains this movement?
d. The concentration of oxygen in the blood is the same as the concentration of carbon dioxide in the tissues.
e. The concentration of oxygen in the blood is higher than that in the tissues f. The concentration of oxygen in the blood is lower than that in the tissues 1
g. The concentration of oxygen in the blood is the same as that in the tissues.
Answer:
The answer is e
Explanation:
Oxygen moves due to diffusion, and the diffusion of oxygen occurs from higher concentration to lower concentration that is from the blood into the tissues
Examine the chart shown below.
genotype phenotype
BB black fur
Bb
black fur
bb
brown fur
What does the phenotype represent?
OA.
the physical appearance or expression of an organism's alleles
B.
the combination of alleles that an organism possesses
O
C.
only the recessive form of a gene
OD
the crossing-over of genetic traits
Answer:
A
Explanation:
Your phenotype will be the outcome of your genotype which are your alleles
Hope this helps
Which technological tool helps earth scientists gain new knowledge about earth’s subsurface?
Group of answer choices.
A. Global positioning system
B. Digital balance
C. Ground penetrating radar
G. Hydrometer
Answer:
ground penetrating radar
Ground penetrating radar technological tool helps earth scientists gain new knowledge about earth’s subsurface. Thus the correct option is C.
What is Ground penetrating radar?Ground penetrating radar detects non-metal and metal objects, as well as voids and underground irregularities. It makes possible to measure the depth, dimensions, thickness of targets. It provides data quickly and can cover a large site area.
Ground penetrating radar can go deep up to 100 feet (30 meters) in low conductivity materials such as dry sand or granite. Moist shale, clays, and other high conductivity materials, may attenuate or absorb GPR signals, greatly decreasing the depth of penetration to 3 feet (1 meter) or less.
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Organ transplantation, stem cell research, and cloning, are all examples of biotechnology.
O False
O True
Assuming these are carbon dioxide molecules, which way do you think the molecules will move and why?
A. Out of the cell. They want to move from high to low concentration (DOWN the concentration gradient)
B. Into the cell. They want to move from low to high concentration (UP the concentration gradient).
Answer:
A. Out of the cell. They want to move from high to low concentration (DOWN the concentration gradient)
Explanation:
Although the cuticle provides important protection from excessive water loss, leaves cannot be impervious because they must also allow carbon dioxide in (to be used in photosynthesis), and oxygen out. These gases move into and out of the leaf through openings on the underside called stomata (Figure 3b).
Answer:
A. Out of the cell. They want to move from high to low concentration (DOWN the concentration gradient)
Explanation:
The option (A) is the correct answer. This statement is the required answer.
Help lol!!!!!!!!!!!!
Answer: Beer
Explanation:
It is not able to consume anything. It is a non living item in comparison to the other options
Have a lovely day
Answer:
Beer (D)
Explanation:
please give brainliest
6 reasons why Meiosis and mitosis are different (PLEASE HELP)
Answer:
Reasons why they're different :
Explanation:
1. Mitosis is reserved for somatic cells while meiosis is reserved for sex cells (gametes).
2. Mitosis results in identical cells , while meiosis results in genetically distinct cells.
3. Mitosis undergoes one round of cell division while meiosis undergoes two rounds of divison.
4. Mitosis results in diploid daughter cells, while meiosis results in haploid daughter cells.
5. Unlike mitosis, meiosis differs in males and females.
6. Mitosis creates a human cell with 46 chromosomes, while meiosis creates a human cell with 23 chromosomes.
what are the genotypes for the offspring in the F1- Generation? PLEASE HELP!!
Answer:
Explanation:
The genotypes in the offspring of the p-generation, i.e. F1, are
Hh (hetero-zygous) short hair
hh (homo-zygous) long hair
each with 50%
However, when Hh crosses with hh, the proportion of the F1 should be 50% each of long and short hair. The diagram shown does not seem to be consistent with realigy.
The sugar molecule that stores the energy is called what?A.Cellular RespirationB.Carbon DioxideC.PhotosynthesisD.Glucose
Answer:
glucose
Explanation:
Glucose is the sugar molecule that stores the energy.
What is cellular respiration?It is a catabolic process.It provides energy by oxidizing glucose.What is photosynthesis?It is an anabolic process.It is the process by which green parts of plants synthesize carbohydrate.They require carbon dioxide, water, sunlight, and chlorophyll.Oxygen is released as a by-product.Carbon dioxide:Carbon-dioxide is a gas.It is one of the raw material of photosynthesis.It is released as a product of cellular respiration.To learn more about energy, glucose, photosynthesis, and carbon dioxide here,
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PLEASE HELP ME WITH THIS BIO QUESTION!
Answer:
Option 1: XnY
Explanation:
X-linked recessive traits can occur in both males and females. Since its recessive it needs both XnXn in females to show up but for males who are hemizygous (XY) they only need a defective copy of Xn for the disease to show up thus option 1 is correct.
I have added a helpful illustration below where we are talking about another x-linked recessive condition in humans: hemophilia.
Answer:
X"n"YPlease leave a Thanks and 5-star rating!
Select the correct graph.
The graphs below show the average monthly rainfall in three ecosystems over three consecutive years. Which ecosystem is likely to be the least stable?
Answer:
the bottom one, the one with the bars far away from each other.
Explanation:
Answer:
It is the second choice at the top
Explanation:
I just did this
Use the following information to answer the questions below. Skin color in a certain species of fish is inherited via a single gene with four different alleles. One fish of this type has alleles 1 and 3 (S1S3) and its mate has alleles 2 and 4 (S2S4). If each allele confers a unit of color darkness such that S1 has one unit, S2 has two units, and so on, then what proportion of their offspring would be expected to have five units of color
Answer:
1/2 = 50% of the progeny is expected to have 5 units of color → S1S4 + S2S3
Explanation:
Available data:
Single gene with four different alleles → S1, S2, S3, S4Each allele confers a unit of color darknessS1 one unitS2 two unitsS3 three unitsS4 four unitsCross:
Parentals) S1S3 x S2S4
Gametes) S1 S3 S2 S4
F1) 1/4 = 25% of the progeny is expected to be S1S2 → 3 units
1/4 = 25% of the progeny is expected to be S1S4 → 5 units
1/4 = 25% of the progeny is expected to be S2S3 → 5 units
1/4 = 25% of the progeny is expected to be S3S4 → 7 units
1/2 = 50% of the progeny is expected to have 5 units of color → 1/4 = 25% S1S4 + 1/4 = 25% S2S3
A scientific name contains information about which of the following groups?
1Points
A
family and species
B
genus and species
C
phylum and order
D
class and family
Answer:
B
genus and species
Explanation:
CAN ANYONE PLSSS HELP WITH THESE QUESTIONS
Answer:
The first one is B
Explanation:
Most of the stars on the HR diagram are classified as which type of star?
Answer:
My answer is MAIN SEQUENCE#CARRYONLEARNING
PLEASE HURRY TO ANSWER THIS!!
One of the main characteristics of a population is its...
a) habitat
b) dynamics
c) change over time
d) geographic distribution
Answer:
D ) geographic distribution
Explanation:
It helps measurement of population
How do you think the high rates of HIV transmission in humans might be related to the length of time it takes for the virus to develop into AIDS?
the process that plants go through to capture and use energy from the sun to make food (glucose ) is called
the process that plants go through to capture and use energy from the sun to make food (glucose ) is called Photosynthesis
The process that plants go through to capture and use energy from the sun to make food ( glucose ) is called [tex]\sf\purple{photosynthesis}[/tex].
..................................................More:-❀ Photosynthesis is a process by which phototrophs convert light energy into chemical energy.
❀ The word “photosynthesis” is derîved from the Greek words "phos" (which means “light”) and "σύνθ-εóîς" (which means “combining together.”) And so it means “combining together with the help of light.”
❀ The process of photosynthesis occurs in green plants (the primary producers in a food chain) and a few other autotrophic organisms such as cyanobacteria, purple bacteria and green sulfur bacteria.
❀ Following is the photosynthesis formula:
☞︎︎︎ 6 CO2 + 6 H2O —> C6 H12 O6 ([tex]\sf\blue{glucose}[/tex]) + 6 O2 ([tex]\sf\pink{oxygen}[/tex]).
..................................................[tex]\bold{ \green{ \star{ \orange{Hope\:it\:helps.}}}}⋆[/tex]
can anyone help me? I’m stuck
Answer:
give me a thanks first and then ill tell the answer
Explanation:
Mold is made up of many fungi cells. Mold would be considered what type of organism?
A. unicellular
B. prokaryotic
C. multicellular
Answer:
The answer is Multicellular
Mold would be considered a multicellular organism, which is made up of many fungi cells.
When it is said that living beings are made up of cells, what is meant is, if they are multicellular organisms.
Eukaryotes include all members of the animal and plant kingdoms, including fungi, which exist both in multicellular forms (molds) and in unicellular forms (yeasts), and protozoa, which are exclusively single-celled.
About multicellular organism molds:
The filaments that make up the mycelium are called hyphae. The hyphae may be separated into generally multinucleated sections by means of perforated septa, or may be absent.The cell wall of the mycelium of molds resembles an extensive tubular system through which the cytoplasm advances to disperse and search for nutrients.Therefore, we can conclude that mold would be considered a multicellular organism, which is made up of many fungi cells.
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how many social connections should you have at least a day?100 POINTS
Answer:
Explanation:
You should have as many social connections a day as you feel comfortable. It can be as little as one a day or you can be on social 24 hours a day. There is no right or wrong answer here.
hi! i’ll give brainliest please help
Answer:
My Guess Is C if im wrong sorry
Explanation:
Just thinking logicaly
Which type of evidence provides the best support for the hypothesis that the ancestors of tetrapods evolved legs before tetrapods were first seen on land?
Answer:
" Fossil record" is the right answer.
Explanation:
Prior knowledge, comprising fossils, rests as well as impressions of species perfectly deposited throughout sedimentary rock throughout early archaeological eras.These are established upon this superpose law which always claims that perhaps the lower layers typically younger than the whole upper ones in uninterrupted factors leading.In ______ reproduction, genetically identical offspring are produced, while in ______ reproduction, offspring are genetically different from each other. Multiple choice question. asexual; sexual