Ecologists have found that dense populations of organisms have lower birth rates, higher death rates, and slower growth rates than less dense populations. Which best explains these findings?
A
interactions between predator and prey
B
natural environmental disturbances
C
unusual weather changes
D
stressors from competition for resources
In which ways does RNA differ from DNA?
A. RNA contains uracil and deoxyribose
B. RNA contains ribose and thymine
C. RNA contains uracil and ribose
D. RNA contains adenine and ribose
Answer:
c
Explanation:
Small frogs living in a marshy region feed on small insects in the region. The relationship between the frogs and insects is a relationship.
Answer:
Parasitism
Explanation:
This is because parasitism is a type of relationship that exist between organisms where one which is the predator feed on the prey thereby causing harm or injury or death to the prey. In the question, small frogs are the predators and insects are the prey, therefore the predators cause harm to the prey, meaning they only benefits from the farm they cause the prey.
What is the difference between acute and chronic poisoning
Answer:
Acute poisoning is poisoning on one occasion, which means it doesn't take very long to get symptoms. While chronic poisoning is is long term,Which would mean it would take a while to get symptoms.
Explanation:
When the Moon appears to be shrinking it is called...
A.Gibbous
B.Waning
C.Waxing
Answer:
the answer would be B Waning
Internal adaptations only apply to animals. Plants do not have internal adaptations.
true or false
pls help
False
Explanation:
I know and i am in 11th grade
Can you please put the steps in the correct order?
Answer:
DNA unzips and unwinds
A gene in DNA is transcrived into an mRNA
The mRNA is transported
the last 2 describe the same process
Explanation:
how many sell membranes does a bird egg have
a bird egg has 2 cell membranes
What organ ONLY has a CHEMICAL change?
Options:
Large intestine
Esophagus
Small intestine
Stomach
Answer:
I think large intestine but I could be wrong
Explanation:
1. What percentage of trees are found in the taiga & how much
oxygen do they help replace?
Answer:
17%. They create 21% of the oxygen
Explanation:
Just used the search engine
The Russian taiga money is owed for fifty-seven percentage of the world's conifer wooded area and 23 percent of all of the world's woodlands.
The Siberian taiga is greater than Amazonia. Boreal forests make a contribution of twenty-one percent to the earth's atmosphere. Taiga Biome, wildfires are very common. They are important to put off vintage and ill trees. The common annual rainfall withinside the boreal wooded area biome is about 33 inches. The dominant plant withinside the taiga is the coniferous evergreen tree.What is a biome?
A biome is a place categorized consistent with the species that stay in that location. Temperature range, soil type, and the quantity of mild and water are precise to a selected area and shape the niches for particular species permitting scientists to outline the biome.
Thus it is clear that they have 21%of oxygen.
To know more about taiga forset refer to link ;
https://brainly.com/question/26538515
PLEASE HELP ME ASAP!!! GIVING 14 POINTS AWAY!!!
Answer:
b
Explanation:
Early human embryos have gill slits and tails. This is evidence that
Your answer:
O humans used to be fish
O
we share a common ancestor with many animals
fish and humans have analogous structures
all of the above
Answer: i think the best answer out of those choices is that we share a common ancestor with many animals
The diagram below shows a food web. The organisms in a food web can be classified based on how they get the energy they need.
Which organism in this food web is a primary consumer?
Group of answer choices
mouse
snake
fox
hawk
No links
Answer:
A Mouse
Explanation:
Primary consumers are the consumers that get their energy from producers.
The hawk is a top predator. Their diet consists only of other consumers.
A fox is a secondary consumer. It eats primary consumers.
The snake eats mice and lizards which are both consumers.
The mouse is the only answer choice that only gets energy from producers, meeting the requirements to be a primary consumer.
I had to cut some information out because it apparently used a swear word. I figured out which word.
Approximately 99% of the information in human DNA is shared by chimpanzee DNA. This is evidence of which of the following?
Answers A-D
A As chimpanzees evolve, they will become more similar to humans
B Chimpanzees and humans share a common ancestor.
C Humans evolved from chimpanzees.
D
All of the above
Answer:
i think the answer is B
A person is trying to solve the equation for the energy of a light wave: E=hcλ . She knows the values of h and c. What does the quantity λ represent?
A.
frequency
B.
wave speed
C.
period
D.
wavelength
Answerd
;-)◑__◐
Explanation:
_4.The period in a couple's relationship before getting married.
A. Family B. Engagement C. Marriage D. Courtship
15 The period when couples are reach
roules
Answer:
b
Explanation:
engagement. ... .. ................
............
18. Refraction is caused by
a) Waves encountering a gap
b) More than one reflection
c) Displaced images
d) Changing waves speeds at a boundary
Explanation:
Option D is the correct option.
Which of the following describes the practice of public lands ranching? O Public lands ranching is increasingly uncommon because of the use of ranchlands for urban development. O Public lands ranching is regulated by the Grasslands Reserve Program. O Public lands ranching is permitted on areas owned by the Bureau of Land Management. O Public lands ranching is more common in the eastern United States.
Answer:
public lands ranching is permitted on areas owned by the Bureau of Land Management.
Explanation:
this had four stars on some other answer soooo. :/
mendel cross between yellow seed YY with green seed yy the F1 result will be . 1.all YY.
2.half YY and yy.
3.all Yy.
4.all yy
Answer: All Yy
Explanation: If you do the cross it comes out with 4 Yy’s.
Which of the following groups of people be the least affected by air pollution?
Answer:
The group which would be the least affected by air pollution are C. teenagers. This is because their respiratory systems have already been established and are quite strong because they are still young and healthy. People with asthma already have troubles breathing, so obviously air pollution is going to be a problem.
Explanation:
Hope it helps :)
(d) A conservation group with a long-term goal of preserving species believes that all at-risk species will disappear whenever land inhabited by those species is developed. It has an opportunity to purchase land in an area about to be developed. The group has a choice of creating one large nature preserve with an area of 45 square kilometers and containing 70 at-risk species, or 5 small nature preserves, each with an area of 3 square kilometers and each containing 16 at-risk species unique to that preserve. Which choice would you recommend and why
Answer:
each with an area of 3 square kilometers and each containing 16 at-risk species unique to that preserve
Explanation:
I choose third choice of having each with an area of 3 square kilometers and each containing 16 at-risk species unique to that preserve because allocation of separate preserve provides good space and less competition in that preserve. Less number of at risk species in a large surrounding area increase in population with higher rate due to availability of resources such as habitat, food and water in large amount as well as low competitors for these resources.
Bacteria can reproduce asexually by dividing into two identical daughter cells using?
Answer:
Bacteria can reproduce asexually by dividing into two identical daughter cells using mitosis
WHAT IS WRONG WITH THIS PROBLEM. HELP ASAPPP
Answer:
50% tongue and 50% no tongue.
Explanation:
Upper case T is dominant over lower case t recessive, so we can see that there are two Tt and two tt.
you have to make the Table like this.
T t
t Tt tt
t Tt tt
Final answer 50% tongue and 50% no tongue.
The mistake is fixed.
Answer:
just labeled wrong
Explanation:
Clyde should have (t,t) not (T,T).
so it should be
Tt Tt
tt tt
50% tongue
50% no tongue
Amelia is fine it was just labeled wrong.
After fertilization, the successful development of a mature, full-term fetus depends on A. The release of human chorionic gonadotropin (hCG) by the developing placenta AND the production of estrogen and progesterone by the placental tissues B. the release of human chorionic gonadotropin (hCG) by the developing placenta C. maintenance of the corpus luteum for all 9 months D. all of these E. the production of estrogen and progesterone by the placental tissues
Answer:
The correct option is A (The release of human chorionic gonadotropin (hCG) by the developing placenta AND the production of estrogen and progesterone by the placental tissues).
Explanation:
The developing placenta release Human chorionic gonadotropin (hCG) during pregnancy. What this hormone does is tell the body (corpus luteum) to produce progesterone to maintain the pregnancy. The presence of Human chorionic gonadotropin is a sign of pregnancy, meaning successful fertilization had happened, and implantation of the embryo had occurred too, preventing another cycle of menstruation.
The successful development of a mature, full-term fetus also depends on estrogen which during pregnancy aids the formation of blood vessels and also aids fetal maturation. While progesterone is a hormone when released during pregnancy helps maintain a healthy pregnancy.
9. Bogs, marshes, and swamps are examples of what type of ecosystem?
A.
desert
B.
wetland
C.
intertidal zones
D.
coniferous forest
Answer:
wetland
Explanation:
Hope this helps!
Geologic time helps explain...
-Different time period of
earth
-Different locations of extinct organisms on earth
-The difference between one organism and another.
Answer:the answer should be Different locations of extinct organisms on earth
Explanation:
please help thank you no links or ill report
Explanation:
Option B is the correct one.
What is digestion?
the process of breaking down food into small enough pieces to be absorbed by the cells
1. the process of eating and chewing
2. the process of releasing energy to the cells
3. the process of breaking down food enough to be swallowed
Which of the following is a concern about the use of hydropower?
A. Hydropower plants pollute the rivers and streams that provide the
energy.
B. Hydropower plants often change the natural flow of water in an
area.
c. Hydropower plants produce radioactive waste.
D. Hydropower plants use a lot of energy to cause the water to flow
uphill into the turbine.
PLEASE HELP UGH
What happens if the sequence is changed (mutations)?
Explanation:
A mutation may change a trait in a way that may even be helpful, such as enabling an organism to better adapt to its environment. The simplest mutation is a point mutation. This occurs when one nucleotide base is substituted for another in a DNA sequence. The change can cause the wrong amino acid to be produced.
