What do oestrogen and progesterone do in the menstrual cycle
Answer:
Oestrogen and progesterone in the control of the menstrual cycle. Progesterone maintains the uterus lining (the thickness of the uterus wall). If the egg has not been fertilised, the corpus luteum dies and progesterone levels drop. This causes menstruation, where the uterus lining breaks down - this is known as having a period.
What is the surface composition of Uranus?
A random mating population has an established frequency of 64% for organisms that are homozygous recessive for a given trait. What is the frequency of this recessive allele in the gene pool? *
a. 0.8
b. 0.32
c. 0.6
d. 0.2
Which of the following statements about human society and limiting factors is true?
Answer:
Modifications made to the environment to reduce the impact of limiting factors can cause disruption to the natural balance of an ecosystem
Explanation:
What type of plate boundary is illustrated in the image?
The type of plate boundary illustrated in the image is convergent boundary plates.
What is the convergent boundary?An area where two plates converge is referred to as a convergent border. The borders of one or both colliding plates may bow up into mountain ranges as a result of the impact, or one plate may bend down into a deep undersea trench.
Convergent boundary plates are the kind of plate border that is depicted in the image. The edges of a plate boundary are those of two plates that are either colliding, moving apart or meeting.
Activities like mountain-building, earthquakes, and volcanoes do happen at plate borders.
Therefore, the border where two plates are colliding is known as a convergence boundary.
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When building a spacecraft what are the 3 things NASA is most concerned about?
Answer:
If the ship is strong enough to support the launch. If the ship can withstand high pressure and temperature rates. If the material is resistant and light at the same time.Explanation:
When a spacecraft is built, many tests must be carried out over the years to prove that the spacecraft has the ability to launch into space and fulfill its mission efficiently. In addition to supporting the launch, these ships need to be built in a way that will withstand space conditions that are very different from terrestrial conditions.
For this reason, there is a concern if the ship can withstand extreme situations of temperature, pressure, gravity, weight, among others. In summary, we can say that three of the biggest concerns that NASA has in building spaceships are:
If the ship is strong enough to support the launch. If the ship can withstand high pressure and temperature rates. If the material is resistant and light at the same time. A trait that helps an organism to survive and reproduce is called an...
a. Adaptation
b. Allele
c. Variation
d. Selection
Answer:
Adaptation
Explanation:
a change or the process of change by which an organism or species becomes better suited to its environment.
A trait that helps an organism to survive and reproduce is called adaptation. The correct option is a.
What is adaptation?An organism can survive under adverse environmental conditions by changing its shape, physiology, and genetic makeup through the process of adaptation. This happens as a result of natural selection and evolution.
An organism is said to be adapting when it makes changes in response to its environment. These changes help organisms to survive in extreme conditions.
In biology, adaptation is the process by which a species adjusts to its environment; it results from natural selection operating over many generations on heritable variation.
Therefore, the correct option is a. Adaptation.
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Summarize what the theme in biology show.
WILL MARK BRAINLIEST!! DON’T COPY FROM OTHERS MAKE YOUR OWN!!
Which kind of succession occurs AFTER a large forest fire?
A. Primary succession
B. Secondary succession
Answer:
B
Explanation:
I know someone already gave an answer but it was wrong. I know this because I was marked wrong when I chose primary succession.
What is a genotype and what is a phenotype? Also what are dominant and recessive alleles and how are they written out?
Answer:
An organism's genotype is its specific combination of alleles for a given gene. ... The phenotype is the physical manifestation of an organism's allellic combination (genotype). For the pea plants, if the red allele is dominant and the white allele is recessive, only two phenotypes are possible.
Explanation:
What are resistant marine ridges or mounds that are composed primarily of biochemically deposited calcium carbonates?
Answer:
yea
Explanation:
The diagram shows the field lines near the poles, X and Y,
of two magnets
Based on the field lines, what are the poles of the
magnets?
X: north
Y south
X: south
Y north
X: north
Y north
Y
X: south
Y south
Mhandreturn
Save and Exit
NOMI
Submit
Answer:
D
Explanation:
X:South
X:South
BLANK transport moves substances from an area of high concentration to an area of low concentration.
Answer:
The answer is Diffusion .
Explanation:
Diffusion is a net movement of molecules from a region of high concentration to a region of low concentration down a concentration gradient.
Answer:
active transport moves substances from an area of low concentration to an area of high concentration.
Explanation:
ANSWER IS: active
Use a Punnett Square to show the probability of 2 heterozygous Black Bears producing a Kermode Bear. Include the phenotype and genotype ratio and percentage of the offspring.
Answer: geno- 25%BB 50%Bb 25%bb
Pheno: black, kermode(white)
Explanation: the top of the punnett square should have Bb and the side should have Bb.
Square one should be BB square two should be Bb square three should be Bb and square 4 should be bb * note* the percentages should add up to 100 and use percentages of 25
In which of the following ways is meiosis similar to mitosis
A. One parent makes four daughter cells
B. It occurs in eukaryotic cells
C. Daughter cells are not alike
Answer:
a
Explanation:
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The purpose of the microvilli in the small intestine is to _______________. MULTIPLE CHOICE.
A. increase friction
B. propel chyme along the digestive tract
C. aid in locomotion
D. increase surface area
Answer: D. increase surface area
Explanation:
Microvilli are hairs that aid in absorption of nutrients. In the small intestine, these cells contain microvilli, which are tiny hair-like projections that increase nutrient absorption. These projections increase the surface area of the small intestine allowing more area for nutrients to be absorbed.Answer:
D
Explanation:
With more surface area food can be broken down faster
What are some of the benefits of roundworms? Check all that apply. A) They help purify sources of fresh water. B) They feed on pests like termites, fleas, and ants. C) They can be used to treat patients with blood clots. D) They break down organic matter in the soil. E) They aid in nutrient cycling.
Answer:
B) They feed on pests like termites, fleas, and ants.
D) They break down organic matter in the soil.
E) They aid in nutrient cycling.
Explanation:
It's on Edge 2020
What are two reasons bees are important beyond making honey
Answer:
Bees are perfectly adapted to pollinate, helping plants grow, breed and produce food. They do so by transferring pollen between flowering plants and so keep the cycle of life turning.
The vast majority of plants we need for food rely on pollination, especially by bees: from almonds and vanilla and apples to squashes. Bees also pollinate around 80% of wildflowers in Europe, so our countryside would be far less interesting and beautiful without them.
Answer:
bees provide air and food but 1 third of all food we eat comes from bees
Explanation:
On the Galapagos Islands, Darwin observed tortoises with domed and saddle-shaped shells. How did Darwin's observations of these tortoises help him form the theory of evolution by natural selection?
Answer:
He realized that the tortoises shells changed to better suit the environment they were living in
Not sure if this helped but I hope it did :)
is flowering patterns independent or dependent
Answer:
The correct answer is dependent.
Explanation:
A variable whose variation does not rely upon that of another is known as the independent variable. An independent variable is modified or monitored within an experiment to examine the influence on the dependent variable. On the other hand, the variable that is being measured and examined within an experiment is termed as the dependent variable.
The flowering pattern is being considered as the dependent variable as the pattern of flowering relies upon the concentration of light exposed by the plant.
True or False Some Crystals form from minerals dissolved in liquids
Answer:
True
Explanation:
crystallisation- liquids cool to a solid-state to form crystals.
PLZ HELP WILL MARK BRAINLEST
Match each vitamin or mineral to a symptom of its deficiency.
vitamin A
potassium
calcium
zinc
problems with fluid balance
thinning bones
vision problems
poor wound healing
Answer:
Vitamin A- vision problems
Potassium- problems with fluid balance
Calcium- thinning bones
Zinc- poor wound healing
Explanation:
Please help!!! I will mark you the BRAINLIEST
Answer:
Molecules stop moving at freezing point. Helium has the lowest boiling point. The molecules move very quickly at boiling point.
Explanation:
Heating up- molecules move faster. Cooling down- molecules move slower
***WORTH 25 POINTS****
What 2 processes change sedimentary rock into igneous rock? (has to become magma first) _________ & _____________.
Answer:
High Temperatures and Pressures; Cooling and Hardening When Sedimentary rocks are heated with tremendous heat and pressure, it will melt and be back again to magma. After some time it will cool and harden and will become Igneous rocks.
Are moths blind, ive always Been told they are but I’m not sure. I will give brainly
Answer:
No they are not.
Explanation:
Hope I helped
Answer:
No. Moths are not blind. ... A moth's dark-adapting mechanism responds much more slowly than its light-adapting mechanism. Once the moth comes close to a bright light, it might have a hard time leaving the light since going back into the dark renders it blind for so long.
Explanation:
From google
A student is observing a sample of pond water and provides the following description in her observations.“I see euglena and paramecium swimming around in the drop of water. A daphnia is feeding on a clump of algae. I see air bubbles around the small clump of algae.”Would you describe what the student saw as a community or an ecosystem? Explain what clue(s) helped you decide.
Answer:
The student is viewing a community.
Explanation:
As we can see in the question above, the student is visualizing a group of living beings of different species that share the same environment and that interact with each other. We call this type of situation a Community.
An ecosystem, on the other hand, would be the set of several communities, which is not presented in the question above.
In probability, an outcome is a possible _____.
Explanation:
result of an experiment or trial
which of the following is not a reason to use the scientific name of an organism, instead of the common name ?
A.the scientific name contains useful information, such as the genus name, which tells what other species this organism is related to
B.the scientific name is unique to each biological species, while the same common name may be applied to several different species
C.the scientific name is easier to remember and is commonly used in conversation
D.none of the above
Answer:
D. The Scientific name is specific to genus, more difficult to remember, and contains usefulness in the information it provides.
Explanation:
With all of the above, none of the option say why you would not use the scientific name.
What is a Genome? Where is it found? What does it contain?
Answer:
A genome is a complete set of dna(genetic information) and contains all of an organisms genes.It is found in the nucleus.
Select the correct answer.
What is ozone?
A. dissolved oxygen
B. the main catalyst in photosynthesis
C. a type of oxygen
D. a form of calcium carbonate