Answer:
alteration of the corpus luteum results in early pregnancy loss (early embryonic death)
Explanation:
The corpus luteum is a temporary gland structure in the female reproductive system (formed in the ovary that released its ovum), which is involved in the secretion of progesterone hormone and also moderate levels of other hormones, i.e., estradiol and inhibin A. After 7-10 weeks of gestation, this structure (corpus luteum) is replaced by the placenta that produces progesterone throughout the rest of the pregnancy. Normal progesterone levels (i.e., between 10 and 20 ng/ml) are required prior to embryo implantation, thereby alteration of the corpus luteum function will lead to disturbance of maternal recognition of pregnancy because pregnancy does not occur until the fertilized egg implants into the uterus.
3. Chemicals in the air can combine with rain to produce acid rain, which is harmful to the environment. Which of these is most likely to be the pH of acid rain?
A. 0
B. 4
C. 10
D. 14
Human height is variable with a wide range of phenotypes because it is affected by the
interaction of several genes, making it a what
Answer:
polygenic trait
Explanation:
polygenic trait
Help need pls and thanks
Answer:
Explanation:
1 is c
Organisms pass traits from one generation to the next. Traits are-
Answer:
inheritance
Explanation:
The transmission of traits from one generation to the next is called inheritance, or heredity (from the Latin heres, heir). However, sons and daughters are not identical copies of either parent or their siblings. What does "variation" mean in terms of sexual reproduction?
On the map, which letter identifies the Grand Canal?
S
T
U
W
Answer: S
Explanation:
The grand canal is located in the north-eastern and central-eastern plains of China.
Answer: The correct answer is, S
Explanation: I just took the test and it was correct.
How is a whale more like a human than a fish? CHOOSE ALL THAT APPLY 1.warm blooded 2.breast feeds its young 3.spends much time out of the water 4.can hold its breath for long periods of time
Answer:
1. warm blooded, 2. breast feed its young
Explanation:
Whales are warm blooded, which means they keep a high body temperature that does not change in the cold water. Fish are cold-blooded, so their body temperature changes depending on the temperature of their environment. AND hales are other mammals that feed their young milk too, although it takes plenty more to feed them than human babies
in an ecosystem, lion eat gazelles and gazelle eat wild grasses. What happen if the population of lion is decline?
Answer: gazelle populaton would increase, and wild grasses would decrease
Explanation: becuase lions are decreasing, less and less gazelles are being eating, giving room for more gazelles to be born, increasing their population, and beause there are more gazelles, they are eating more and more grass, deacreasing the grass.
HELPPPPPPPP
The role an organism has in a community
A. habitat
B. food chain
C. adaptation
D. niche
Answer:
D
Explanation:
an organism lives in a habitat within a community. the role of an organism with a community is its niche
Answer:
The first person is right because, The role or job of an organism within a community is its niche.
Explanation:
Community's, also called biological community, in biology, an interacting group of various species in a common location. For example, a forest of trees and undergrowth plants, inhabited by animals and rooted in soil containing bacteria and fungi, constitutes a biological community.Have A Great Day
Love, princessmiaguzman :)
Plz help me well mark brainliest if correct!!
Answer:
A
Explanation:
it causes temperatures to rise
Answer:
the answer is all of the above
Explanation:
these are all consequences of climate change
What types of evidence allow scientists to infer that single-celled life likely existed 3.8 billion years ago? Select all that apply.
A. transitional fossils in ancient rocks
B. certain forms of carbon in ancient rock
C. fossil evidence, such as stromatolites
D. evidence of extinction events
Answer:
c
Explnation: fossil evidence, such as stromatolites
.They are usually found in air * True False
Answer:
true
Explanation:
I hope it helps
pa brainliest po
differentiate between circadian rhythms which are entrained and circadian rhythms which are free-running.
Answer:
Free-running rhythms are characterized by a consistent delay in the timing of the circadian cycle by as much as 60 to 70 minutes per day and can be detected by measurement at regular intervals of a marker rhythm, such as the daily rise in the plasma melatonin concentration.
Explanation:
Hope this helps! Have a fantastic day/night
What does a circle mean on a pedigree?
circle is female, a square is male
The spectrum of a distant star contains sodium lines that are offset from their normal position, as shown. What is the most likely explanation?
A. The star is relatively hot.
B. The star is relatively cool.
C. The star is moving rapidly toward us.
D. The star is moving rapidly away from us.
Answer:
C.The star is moving rapidly toward us
The_____hypothesis states that selection favored skin in populations under conditions of high uv radiation (environmental stressor) because those individuals were protected against the consequences of_____destruction and were more likely to have children who could reproduce. Unlike the hypothesis, the folate hypothesis involves as a result of natural selection.
Answer:
Folate
Dark
Folate
Explanation:
As per the Folate hypothesis of Vitamin D, the photosensitive vitamins are protected by the two clines of skin pigmentation. These clines of skin pigmentation maintain vitamin D level and folate which is essential for the preservation of the reproductive health
The two strands of the DNA are antiparallel to each other such that at the end of the DNA one strand will be 3' paired with a 5' end.
a. True
b. False
Answer:
True
Explanation:
Two strands of DNA are antiparallel to each other because they appear in opposite direction and are mirror image and they are read in 5' - 3' direction which also refers to the orientation of nucleotides of a single strand of DNA and the reading would start from the free phosphate and it will end at the hydroxyl group
platypus is considered as a bridge animal
Explanation:
The platypus serves as a 'bridge' animal between nonmammals like birds and reptiles, which maintain their testicles in their body cavity, and placental and marsupial mammals, which hold their testes in an external scrotum."
Helppppp plssss I will mark as brainliest
Answer:
I'm pretty sure it is organ
Every living thing belongs to a ___ within an order.
Answer:
class
Explanation:
Are you talking about kingdoms within animals? ¯\_(ovo)_/¯
What is the smallest unit that can carry on all functions of life?
Answer:
Cell is the smallest unit that can carry on all functions of life. The cell is the smallest structural and functional unit of all living organisms. Cells are usually microscopic and they perform all functions of life.
Explanation:
why is the naked mole rat so weird?
Pls help !!!Genetically modified plants have the potential to deter pests while not
harming bees. How?
A. Plants would be able to control the pesticide levels in their flowers,
keeping them below lethal levels for bees.
B. Plants would effectively become inedible to aphids.
C. Plants would produce a natural pesticide that does not harm bees.
D. Plants would produce a pheromone aphids use to warn of predators.
disturbance destroying an area through the climax of ecological succession
Answer:
hope this helps
secondary succession
Explanation:
Large, low intensity disturbances, such as plowing in conventional agriculture, result in moderate amounts of succession, where species can survive in the soil and quickly recolonize areas after a disturbance. This type of succession is often called secondary succession
if my pet dog fell ill i should take him to hospital ?true or false
Select ALL of the abiotic factors
lesson 5.01
Question 1 options:
fungi
air
soil
light
salinity
Answer:
light
Explanation:
An abiotic factor is a non-living component in the environment. This can be either a chemical or physical presence. Abiotic factors fall into three basic categories: climatic, edaphic and social. Climatic factors include humidity, sunlight and factors involving the climate. Edaphic refers to soil conditions, so edaphic abiotic factors include soil and geography of the land. Social factors include how the land is being used and water resources in the area. Five common abiotic factors are atmosphere, chemical elements, sunlight/temperature, wind and water.
Temperature and Light

•••
Temperature of the air and water affect animals, plants and humans in ecosystems. A rise in temperature has the potential to change the way a living thing develops, because it changes the metabolic rate of the organism. All living organisms have a tolerance level for temperature range. For example, a human being would die if he stood out in minus 50 degree temperatures for any length of time. Light exposure often affects the temperature. Areas with direct sunlight are warmer
What does a shaded square mean on a pedigree
Answer:
Explanation:
A completely shaded circle or square indicates that a person expresses the trait. A circle or square that is not shaded indicates that a person neither expresses the trait nor is a carrier of the trait.
hope this helps
have a good day :)
Which statment describes the relationship
between the reactants of photosynthesis
and the products of cellular respiration?
A:Cellular respiration and photosynthesis are
unrelated
B:The reactants of cellular respiration are the
reactants of photosynthesis
C:The products of cellular respiration serve as
the reactants of photosynthesis
D:The products of cellular respiration are the
products of photosynthesis
Answer:
the answer is c. the product of cellular respiration serve as the reactants of photosynthesis
how changes in the atmosphere effect to the plants growth?
Answer:
Mark brainliest please!
Explanation:
Climate change affects the growth of plants in many ways but as we know its 3. The first, as CO2 levels increase, plants don't need a lot of water to do photosynthesis. Scientist have now discovered a third effect: As CO2 levels go up higher, it amps up photosynthesis. Plants in more of this heat, CO2-rich environment grow bigger and better, with more plant like leaves and such.
Abiotic Factors and biotic factors in the oxygen cycle
Oxygen cycle The cycling of oxygen between the biotic and abiotic components of the environment (see biogeochemical cycle). ... In the process of respiration oxygen is taken in by living organisms and released into the atmosphere, combined with carbon, in the form of carbon dioxide.
Which of the following best describes what carrying capacity is?
A
The quantity of marine life a limited water resource can sustain.
B
The maximum number of a population that an ecosystem can sustain.
C
The total amount of greenhouse gases a specific ecosystem can sustain.
D
The minimum number of predators a specific geographic area needs to sustain itself.
Answer:
A
Explanation:
here the answer will be A