Answer:
Some three billion years ago, the Earth's atmosphere was virtually devoid of oxygen. At about 2.4 billion years ago, oxygen was released from the seas as a byproduct of photosynthesis by cyanobacteria. Levels of the gas gradually climbed, reaching about one percent around two billion years ago.
Explanation:
Hope this helped!
In leopards, being shy (S) is dominant to being sassy (s), and being timely (T) is dominant to being tardy (t).
A female leopard that is
heterozygous for both the S and I trait mates with a male leopard that is also
heterozygous for both traits. Both the S and I traits assort independently from one another.
What is the probability that they will have an offspring that is sassy and timely?
The probability that the leopards will have an offspring that is sassy and timely is 3/16
This question involves two different genes. The allele for being shy (S) is dominant to the allele for being sassy (s) in the first gene while the allele for being timely (T) is dominant to being tardy (t).According to this question, A female leopard that is heterozygous for both the S and T traits i.e. SsTt mates with a male leopard that is also heterozygous for both traits i.e. SsTtThe two heterozygous leopards (SsTt) will produce the following gametes: ST, St, sT, and stUsing these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced: S_T_ = shy, timely (9)S_tt = shy, tardy (3)ssT_ = sassy, timely (3)sstt = sassy, tardy (1)According to this question, the probability that the two leopards will have an offspring that is sassy and timely is 3/16.Learn more at: https://brainly.com/question/7320771
Is water renewable or non-renewable?
yes or no?
explain:
Answer: yes.
Explanation: Non-renewable resources can be depleted and cannot be replenished. Water is a natural resource which is not only found on the surface of the earth in rivers, oceans, lakes, and streams but also underground. Water is a renewable resource.
Why is the presence of organic material in the soil important?
A)
It wards away plant eating organisms.
B)
It increases plant growth.
C)
It increases sunlight absorption.
D)
It increases water absorption.
Answer:
D) It increase water absorption.
Explanation:
When a soil is at field capacity, organic matter has a higher water holding capacity than a similar volume of mineral soil.
Answer: B) it increases plant growth
Explanation:
Edge
Helppp I will marke u as brainlest .
Muscles worksheet STEP 1: Fill in the blank with the name of the muscle.
1. flexion of the hip —————
2. extension of the thigh ——————
3. abduction of the thigh adduction of the thigh —————
4. extension of the arm —————
5. flexion of the arm —————
4. abduction of arm at shoulder ——————
5. rotation of the head ——————
6. flexion of abdomen —————-
7. lateral flexion of the abdomen ——————
8. lateral rotation of the abdomen
9. Elevation of the ribs
10. Elevation of the mandible
Sheela wants to demonstrate the importance of photosynthesis to plants and the other living organisms that eat plants. She models the process of photosynthesis that is specifically involved in the production of sugars.
Which process in the light-independent reactions of photosynthesis is she modeling?
the production of oxygen
the production of glucose
the production of carbon dioxide
the production of water
Answer:
the production of glucose
Explanation:
sugar=glucose
Request:
(Brainliest plzzz)
In this process, the light-independent reactions of photosynthesis are she modelling, and the production of glucose. Thus, option "B" is correct.
What is the chemical reaction of photosynthesis?The chemical reaction of photosynthesis is given as follows;
6CO₂(g) + 6H₂O(l) + Energy from light → C₆H₁₂O₆(s) + 6O₂(g)
Six molecules of gaseous carbon dioxide (CO₂) combine with six molecules of liquid water (H₂O) in the presence of energy from Sunlight to produce one molecule of solid glucose (C₆H₁₂O₆) and six molecules of gaseous oxygen (O₂)
Thus, option "B" is correct.
To learn more about photosynthesis click here:
https://brainly.com/question/1757345
#SPJ2
what is the force of a rock falling of a cliff if it has a mass of 0.4 kg?
Answer:
impulse=force x time
force=mass x acceleration due to gravity
force=
impulse =3000 x 2.5= ( sorry i don't have a calculator right now so you must calculate this yourself)
I converted from kg to g because it is the standard.
Explanation:
1. John observed bacteria at 100X under the oil immersion and then decided to go back to 40X
objective by raising the oil objective a little to avoid the damage to objective lens. Critique his
technique. (1 pt.)
Answer:
See the answer below
Explanation:
In the first instance, the 100X objective does not have any business touching the slide on the stage so that there would not be any reason to raise it a little in order to go back to a lower objective. At higher objectives, only the fine adjustment should be used to bring the object into focus so as to avoid the objective lens from touching the slide which can damage the objective and or break the slide on the stage.
For the X100 objective to be raised in order to avoid a damage to it, it means John allowed the objective to come too close to the slide in the first place. This should not have been so.
Loss-of-function mutations in the coding region of the homologous gene in humans result in loss of hair, teeth, and sweat glands, as in the toothless men of Sind (India). What does this suggest about hair, teeth, and sweat glands in humans? Select the two correct answers. a) The phenotype of loss of Eda function in humans indicates that Eda has been co-opted by evolution to control different aspects of development, as it does in sticklebacks. b) The phenotype of loss of Eda function in humans indicates that human Eda protein and stickleback fish Eda protein contain structurally similar DNA-binding domains. c) The phenotype of loss of Eda function in humans indicates that Eda controls multiple aspects of human development, either directly by controlling each tissue type independently or by controlling a tissue that is a developmental precursor to the affected tissue types. d) The phenotype of loss of Eda function in humans indicates that human hair and teeth might be homologous to stickleback fish bony plates. e) The phenotype of loss of Eda function in humans indicates that hair, teeth, and sweat glands are homologous structures.
Answer:
c) The phenotype of loss of Eda function in humans indicates that Eda controls multiple aspects of human development, either directly by controlling each tissue type independently or by controlling a tissue that is a developmental precursor to the affected tissue types.
e) The phenotype of loss of Eda function in humans indicates that hair, teeth, and sweat glands are homologous structures.
Loss-of-function mutations in the coding region of the homologous gene in humans result in loss of hair, teeth, and sweat glands, as in the toothless men of Sind (India). This suggestion in their hair, teeth, and sweat glands indicates that a) The phenotype of loss of Eda function in humans indicates that Eda has been co-opted by evolution to control different aspects of development, as it does in sticklebacks. c) The phenotype of loss of Eda function in humans indicates that Eda controls multiple aspects of human development, either directly by controlling each tissue type independently or by controlling a tissue that is a developmental precursor to the affected tissue types.
Ectodysplasm A (EDA) is known as a transmembrane protein in the human body that is responsible for the development of ectodermal tissues of the human skin and teeth.
The cooption of Eda with evolution is likely to bring about changes in the development which results in phenotypic loss of Eda. Various genetic studies reveal the orthologous nature of the Eda gene, indicating a comparable method of development, and Eda plays a part in the control of embryonic ectoderm growth, which is essential for the formation of teeth, hair, as well as the sweat gland.
Therefore, we can conclude that Option A and C are both correct from the following options.
Learn more about evolution and mutation here:
https://brainly.com/question/24296097?referrer=searchResults
How is ATP made in photosynthesis?
Answer:
Light is absorbed and the energy is used to drive electrons from water to generate Nicotinamide adenine dinucleotide phosphate or NADPH and to drive protons across a membrane. These protons return through ATP synthase to make ATP.
Hope this helped! :)
What conclusion can you draw if a sample a tourmaline scratches a sample of kyanite, but kyanite cannot scratch tourmaline?
Although experiencing severely traumatic events may lead to PTSD, it is also likely to lead to
arachnophobia.
phobias.
stimulus generalization.
posttraumatic growth.
Answer:
traumatic events can lead to PTSD
PTSD is post traumatic stress disorder.
PTSD leads to many mental health issues, mostly depression and anxiety.
I believe that the answer is Phobias.
Phobias are irrational fear of a thing or situation.
Phobias are also a type of anxiety disorder.
A person is effected by PTSD after a traumatic event.
so, they tend to develope Phobias of things that remind them of that event.
Explanation:
I hope this helps...
have a great day ahead.
Question 8
6.25 pts
Which of the following is NOT a reason for why nitrogen is important to life on Earth?
a.Nitrogen is used to make organic matter, including proteins.
b.Consumers obtain nitrogen into their bodies by eating organisms that contain nitrogen, such
as plants,
O All of these are important to life.
Nitrogen is a necessary nutrient for plants.
Next >
Answer:
O . All of these are important to life
Which list contains only animal phyla?
mosses, annelids, conifers, chordates
mosses, ferns, conifers, flowering plants
cnidarians, mollusks, annelids, arthropods, echinoderms, chordates
cnidarians, ferns, annelids, arthropods, echinoderms, flowering plants
Answer:
A) Mosses, Annelids, Conifers, Chordates
Explanation:
Annelids, chordates, cnidarians, mollusks, arthropods, and echinoderms belong to animal kingdom ANAMELIA.
Answer:
the answer is C)cnidarians, mollusks, annelids, arthropods, echinoderms, chordates
Explanation:
How do adaptations help organisms survive in a predator/prey relationship?
Answer:
Prey animals develop adaptions to help them not get eaten. They develop defense mechanisms. The predators develop strategies to make themselves more affective in catching prey.
Hope this helped! Please mark brainliest!
If trees are planted in a cleared area of forest carbon levels will increase ?
Answer:
No, carbon levels will decrease.
Explanation:
Trees take inn carbon and 'breathe' out oxygen
So the carbon levels should decrease
semi-conservative replication
What is semi-conservative replication
e or False: The use of fossil fuels has contributed to more carbon released in the
Bosphere than in the past.
Answer:
True
Explanation:
Which process cycles carbon through the
atmosphere?
Answer:
In the atmosphere, carbon is attached to oxygen in a gas called carbon dioxide (CO2). Through the process of photosynthesis, carbon dioxide is pulled from the air to produce food made from carbon for plant growth. Carbon moves from plants to animals.
Explanation:
plz circle yes or no
Answer:
1. No 2. Yes 3. No 4. No
Explanation: no explnation needed
Answer:
no yes no no
srry if its wrong if it is just delete it
Explanation:
hope this helps!
plz answer itplzzzzzzzzzzzz
Answer:
B is the correct answer
HELP WILL GIVE BRANLIEST! Please give an explanation
Answer:Its the third one
Explanation:ey have man protectuon cells becuase its soft.
What do organs combine to form?
O organisms
O cells
O organ systems
for
O tissues
Answer:
Organ systems.
Explanation:
Cells form tissues, tissues form organs, organs form organ systems, and organ systems form organisms.
Hope this helped!
hellppppp please will give brainliest
Answer:
abiotic
Explanation:
Abiotic factors in a Biome would include things that are not alive or have never been alive.
Which substance is not part of a nucleotide?
sugar
Nitrate
phosphate
base
In which part of the digestive system is most of the nutrients from food
absorbed?
large intestine
small intestine
stomach
liver
Answer:
small intestine
Explanation:
If two people who are both heterozygous for the trait of a bent pinky finger have a child, what are the possible genotypes and phenotypes?
genotypes is 1:2:1 & phenotypes is 3:1
l hope this helps you
Answer:
When two people heterozygous for the trait of a bent pinky finger have a child, the possible genotypes CC, Cc and cc -in a ratio of 1:2:1- being the phenotypes bent pinkies: straight pinkies in a ratio of 3:1.
Explanation:
Bent pinky finger is due to a condition called Camptodactyly, characterized by sustained bending of a finger due to a deformity in an interphalangeal joint. Pinky finger camptodactyly is a trait that is inherited in an autosomal dominant pattern.
With camptodactyly (bent pinky finger) C Without camptodacilia (straight pinky finger) cThe parental generation is made up of two heterozygous individuals with bent pinky fingers:
♂ Cc
♀ Cc
The offspring of this hybrid cross, according to Mendelian heritage, can be seen in this Punnett Square:
Alleles C c
C CC Cc
c Cc cc
According to this the offspring will have:
Genotypes:
CC: 25%
Cc: 50%.
cc: 25%
Phenotypes:
Bent pinky finger: 75%
Straight pinky finger: 25%
Does Potassium have cations or anions?
DNA polymerase is responsible for pairing the new nucleotides with the template strand. If the template strand reads ATCCGC, what will the newly synthesized strand read
Answer:
ATCCGC-TAGGCG
Explanation:
Can organisms plan and willingly change their
mutations in their genes? Why or why not.
simple answer 1 sentence please
Answer:
No
Explanation:
Organisms cannot willingly change their mutations as these things occur by chance and within the genetic code which the organisms have no direct power over.
plz answer my question plz tomorrow is my exam I need my answer plz
Answer:
B
Explanation:
I think the plant which absorbs carbon dioxide during day will dry