Answer:
A) reforestation
Explanation:
HOPE IT HELPS YOU
what kingdom has some organisms that use sunlight to make food, while others consume other organisms as their food source
Answer: Plant kingdom!
Explanation: Most plants use sunlight to make food with photosynthesis but others, like the Venus fly trap, consume other organisms. Good luck! :D
Which step in PCR (polymerase chain reaction) is responsible for opening and unwinding the DNA strand to be analyzed?
A) binding
B) elongation
C) denaturation
D) annealing
Why are pioneer species usually autotrophs?
A.Newly established ecosystems do not usually have pre-existing food sources.
B.Only autotrophs are large enough to survive.
C.Autotrophs are usually at the top of an ecosystem's food chain.
D.Only autotrophs can survive where water is scarce.
Answer:
Answer: Newly established ecosystems do not usually have per-existing food sources. ... An exotic insect is introduced to a forest ecosystem. It is resistant to the toxins the trees produce to protect them from being eaten by insects.
Explanation:
PLEASE HELP I NEED THIS FAST PLEASE
How long will it take for 40.0 grams of Radium-226 (Ra-226) to decay to leave a total of 2.5 grams of Ra-226? Ra-226 has a half-life of 1600 years.
Answer:
6400 years
Explanation:
Given that;
N/No =(1/2)^t/t1/2
No = amount of radioactive material originally present
N = amount of radioactive material present at time t
t= time taken for N amount of radioactive material to remain
t1/2 = have life of the radioactive material
2.5/40 = (1/2)^t/1600
1/16 = (1/2)^t/1600
(1/2)^4 = (1/2)^t/1600
4 = t/1600
t = 4 * 1600
t = 6400 years
take a look at the fossil made with amber on page 30. how are they formed and what features of the organisms are preserved in Amber?
explain how temperature affects population size
Answer: High temperature and drying were both associated with greater per capita mortality rate. Smaller population sizes at high temperatures and drying regimes may result from increased desiccation of adults and thus higher mortality. These precipitation effects on adult production are absent at 22°C
OR
Other than toxic metals, temperature rise and low resource availability are factors that are also known to stress populations. A rise in temperature generally accelerates metabolic rates and hence population growth rate
Phillip Gingrich finds an S-shaped bone in this partial skull, a sigmoid process, which is unique to
one particular order of animals in the water today... which one?
Answer:
A primitive whale which he named Pakicetus.
Explanation:
Philip Gingrich is a vertebrate paleontologist at the University of Michigan. He has performed extensive research on whales at the Egyptian desert of Wadi Hitan. His research team member discovered a skull whose braincase was bigger than that of a walnut. Gingerich was able to link the small-brained animal, to an early whale.
The auditory bulla had an s-shaped bony crest known as the sigmoid process and these two features helped whales to hear in water. The case, however lacked other features that helped whales hear beneath the waves. This led Gingrich to the conclusion that the unknown animal was semi-aquatic. This finding also lent credence to the possibility of whales evolving from terrestrial animals.
define a taxon.Give some examples of taxa at different hierarchical levels
Based on the context clue in the
sentence below, what does
brilliant mean?
The ball was a brilliant blue in
stark contrast to the dull, tan
walls of the racquetball courts.
A. dazzling
B. round
C. stuffy
Answer:
i belive is: A. Dazzling
Answer:
dazzling
Explanation:
when they use brilliant in this context, they are seemingly emphasizing the beauty in the pigment of the ball.
Is the following statement true or false?
Environmental pressures cannot lead to adaptations over time, only mutations can.
True
False
If a DNA molecule is 24% Thymine, which one of these is correct?
A. Adenine is also 24%, Cytosine is 26%
B. Cytosine and Guanine have a total of 48%
C.Guanine is 26% and Cytosine is 24%
D. A and B are correct
Answer:
D
Explanation:
D is the correct answer i think and I'm sorry if it's not
True or False :
Fish use paired fins to keep their balance.
Pls tell fast will mark brainliest to first and correct ans
NO SCAMMING
Answer:
The caudal fin, or tail fin, is the main fin used to move the fish forward in the water, while the dorsal fins help the fish balance and keep it from rolling over. The paired fins help with steering and hovering.
Explanation:
Answer:
true
Explanation:
The top fin or dorsal fin is also used in balance but its main function is usually protection.
2. How do adaptations help organisms?
A. It helps the organisms change colors.
B. It improves its ability to survive and reproduce.
C. It improves its ability to change species.
D. It helps the organism become a fossil.
Answer:
B. It improves its ability to survive and reproduce.
Explanation:
B cells are responsible for cell mediated immunity.
A. True
B. False
Answer:
True
Explanation:
B cells are involved in the humoral immune response and T cells are involved in the cell-mediated immune response. Class 1 MHC molecules are found on all uncleared cells and class 2 MHC molecules are found on macrophages, B cells, and activated T cells.
PLEASE HELP!! WILL BE MARKED BRAILIEST
10 points for each question
7. reproductive cell containing genetic material from each parent organism, able
to grow into a complete new mold structure
Zygomycota
yeast
zygospore
stolon
8. sexual reproductive structure formed where two hypha of mold contact each
other *
stalk
symbiosis
spores
zygosporangium
Answer:
7-Answer is zygospore
8- Answer is zygosporangium
Explanation:
I hope it's helpful!
1.The muscular system consists of two types of tissue, muscle tissue and ______________________________.
connective tissue
scar tissue
skin tissue\\
HELP PLSSS!!! CROWN WILL BE REWARDED FOR CORRECT ANSWER!!!
Which is NOT a function of the digestive system?
A. protect your body from pathogens by providing a protective cover over your body
B. molecules are absorbed into blood and carried throughout the body
C. break down food molecules the body can use
D. wastes are eliminated
Answer:
Its, A.) protect your body from pathogens by providing a protective cover over your body
Rr x Rr what percent of the offspring will be round
Answer:
75%
Explanation:
The allele for the dominant round phenotype is represented by R while the allele for recessive wrinkled phenotype is represented by r. In this question, two heterozygous parents are crossed i.e. Rr × Rr.
These parents will produce gametes as follows: R and r. Using these gametes in a punnet square (see attached image), the following offsprings will be produced: RR, Rr, Rr and rr. The RR, Rr, Rr offsprings will have a round phenotype while the rr will have a wrinkled phenotype. This means that 3/4 × 100 = 75% of the offsprings will be round.
Which property of DNA contributes the most to DNA's ability to
replicate?
A. DNA coils into a long spiral or helix
B. DNA has two complementary strands that can separate
C. Each strand of DNA has a sugar-phosphate backbone
D. Each strand of DNA can be made of a unique sequence of
four different bases
The property of DNA contributes the most to DNA's ability to replicate is DNA has two complementary strands that can separate. Thus, option B is correct.
In how many steps replication occurs?Replication has been occurs in three major steps is the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin.
DNA replication has been known the biological process of producing two identical replicas of DNA from one original DNA molecule.DNA replication occurs in all living organisms acting as the most essential part of biological inheritance.
This is essential for cell division during the growth and repair of damaged tissues, while it also ensures that each of the new cells receives its own copy of the DNA. The cell possesses the distinctive property of division, which makes replication of DNA essential.
Therefore, The property of DNA contributes the most to DNA's ability to replicate is DNA has two complementary strands that can separate. Thus, option B is correct.
Learn more about cell division on:
https://brainly.com/question/29773280
#SPJ2
20 pts!!!
The CRISPR system allows biologists to alter the nucleotide sequence of specific genes. Which of these tasks could theoretically be achieved by applying the CRISPR system instead of other techniques of genetic engineering?
A. transferring a functional gene from one organism to another
B. deactivating a disease-causing gene
C. replacing a defective gene with a normal gene
D. determining whether two DNA samples came from the same source
Answer:
B.
Explanation:
Your welcome
When Quorn® was first marketed it was described as being 'mushroom in origin' What does this mean?
Answer:
Explanation:
Though until recently the manufacturer's (Marlow Foods) advertising and labeling implied that the product is “mushroom protein” or “mushroom in origin,” the mold (or fungus) from which it is made does not have much to do with mushrooms. Rather, the mold is grown in liquid solution in large tanks
Breathing cannot be considered as a whole process of respiration because
Answer:
all of the above
Explanation:
2. Order the steps of mineral formation from the first stage to the final stage.
Answer:
(1) igneous, or magmatic, in which minerals crystallize from a melt, (2) sedimentary, in which minerals are the result of sedimentation, a process whose raw materials are particles from other rocks that have undergone weathering or erosion, (3) metamorphic, in which new minerals form at the expense of earlier ones owing to the effects of changing—usually increasing—temperature or pressure or both on some existing rock type, and (4) hydrothermal, in which minerals are chemically precipitated from hot solutions within Earth.
Explanation:
Hope this helps
From.
1kvibing
Chemical formulas can have three components. Help me with the worksheet plz.
Answer:
1.the elements
2. subscripts
3.right
4.atoms
5.one
6.brackets
7.multiplied
8.subscript
9.right
Explanation:
i’ll mark brainliest
Answer:
B C and D
Explanation: A isn't as Eukaryotes contain double-stranded linear DNA molecules packaged into chromosomes
Zachary has watched a documentary on the negative and positive impacts of cloning cells. Which of the
following might have been featured in the documentary as a positive impact that cloning may have on
individuals?
PLEASE HELP ME
Answer: Organ replacement
Explanation:
Why do we sometimes talk in our sleep?( ꈍᴗꈍ)
Answer:
Sleep talking usually occurs by itself and is most often harmless. However, in some cases, it might be a sign of a more serious sleep disorder or health condition. REM sleep behavior disorder (RBD) and sleep terrors are two types of sleep disorders that cause some people to shout during sleep
Explanation:
thankyou
EASY POINTS!
In humans, brown eyes (B) is dominant over blue eyes (b). Teddy has brown eyes, his mother has brown eyes and his father has blue eyes. Their punnett square is represented in the picture attached:
Teddy says that all 4 children in his family have brown eyes. Is this possible?
Question 12 options:
a. Yes, because every child has a 50% chance of having brown eyes
b. No, they should be half brown eyes and half blue eyes
c. No, at least one of his siblings should have brown eyes
Answer:
A. Yes, because every child has a 50% chance of having brown eyes
Explanation:
This is the correct answer
According to the Punnett square that is given below, the argument made by Teddy may not have correct evidence. This is because it is not possible to have all 4 children in his family has brown eyes. So, the correct option for this question is B.
What is Punnett square?A Punnett square may be characterized as a type of table in which all of the plausible consequences for a genetic cross between two individuals with known genotypes are given.
According to the context of this question, the genotype of the mother is Bb which has a brown phenotype because brown eye (B) is dominant over blue eyes (b). While the genotype of the father is bb. This is blue eyes.
When both these genotypes are crossed, the genotypes of offspring are Bb, Bb, bb, and bb. This means that the individuals have both traits of blue and brown phenotypes by 50% each.
Therefore, the correct option for this question is B.
To learn more about Punnett square, refer to the link:
https://brainly.com/question/3522181
#SPJ2
whats the Definition of postsynaptic?
Answer:
Postsynaptic potentials are changes in the membrane potential of the postsynaptic terminal of a chemical synapse. Postsynaptic potentials are graded potentials, and should not be confused with action potentials although their function is to initiate or inhibit action potentials.
I hope it's helpful!
Answer:
occurring after synapsis
Explanation:
of, occurring in, or being a nerve cell by which a wave of excitation is conveyed away from a synapse