1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sdas [7]
3 years ago
13

Jack and Jill are twins. Because he is a boy, Jack’s parents encourage him to run. However, they discourage Jill from engaging i

n athletic activity. As a result, Jack is much faster at running up a hill than Jill. The difference in Jack and Jill’s behavior is best explained by __________.A) nonshared environmental influences.
B) active gene-environment relations.
C) polygenetic effects.
D) niche-picking.
Biology
1 answer:
prisoha [69]3 years ago
8 0

Answer: A) Non shared environmental influences

Explanation: Non shared environment influences are any aspects of the environment and any influences that can be different for different children within the same family. In this case , Jack was encouraged to run because he is a boy thereby enabling him to be able to run up the hill much faster than Jill despite the fact that they are both children in the same family.

You might be interested in
What is the effect of an emulsifier on the digestion of lipids
snow_lady [41]

Answer:

Emulsifier generally reduces the surface tension of the lipid  there by helping in the digestion of the lipid molecules.

Explanation:

Bile that is secreted from liver act as emulsifier because the bile helps in the break down of lipid into small molecules to form micelle thereby reducing the surface tension of the lipid molecules.

                  Due the formation of micelle the broken down lipid molecules binds to the active site of the lipase enzyme and get digested to form fatty acid and glycerol.

           Beside digestion Emulsifier Bile also helps in the absoption of lipid from the small intestine.

7 0
3 years ago
How did humanity start?
svetoff [14.1K]




Human evolution

Human evolution is the lengthy process of change by which people originated from apelike ancestors. Scientific evidence shows that the physical and behavioral traits shared by all people originated from apelike ancestors and evolved over a period of approximately six million years.
One of the earliest defining human traits, bipedalism -- the ability to walk on two legs -- evolved over 4 million years ago. Other important human characteristics -- such as a large and complex brain, the ability to make and use tools, and the capacity for language -- developed more recently. Many advanced traits -- including complex symbolic expression, art, and elaborate cultural diversity -- emerged mainly during the past 100,000 years.
Humans are primates. Physical and genetic similarities show that the modern human species, Homo sapiens, has a very close relationship to another group of primate species, the apes. Humans and the great apes (large apes) of Africa -- chimpanzees (including bonobos, or so-called “pygmy chimpanzees”) and gorillas -- share a common ancestor that lived between 8 and 6 million years ago. Humans first evolved in Africa, and much of human evolution occurred on that continent. The fossils of early humans who lived between 6 and 2 million years ago come entirely from Africa.
Most scientists currently recognize some 15 to 20 different species of early humans. Scientists do not all agree, however, about how these species are related or which ones simply died out. Many early human species -- certainly the majority of them – left no living descendants. Scientists also debate over how to identify and classify particular species of early humans, and about what factors influenced the evolution and extinction of each species.
Early humans first migrated out of Africa into Asia probably between 2 million and 1.8 million years ago. They entered Europe somewhat later, between 1.5 million and 1 million years. Species of modern humans populated many parts of the world much later. For instance, people first came to Australia probably within the past 60,000 years and to the Americas within the past 30,000 years or so. The beginnings of agriculture and the rise of the first civilizations occurred within the past 12,000 years.
Hope this helps:)

3 0
3 years ago
Read 2 more answers
How are codons and anticodons alike?
julia-pushkina [17]
A codon is a group of three mRNA bases while an anticodon is a group of three tRNA bases. For example AUC is a codon and UAG is an anticodon that matches it.
4 0
3 years ago
The number of bacteria in a certain population is predicted to increase according to a continuous exponential growth model, at a
Brilliant_brown [7]

The given question is incomplete. The complete question is as follows;

The number of bacteria in a certain population is predicted to increase according to a continuous exponential growth model, at a relative rate of 16% per hour. Suppose that a sample culture has an initial population of 71 bacteria. Find the predicted population after three hours Do not round any intermediate computations, and round your answer to the nearest tenth bacteria .

Answer:

114.7

Explanation:

A (t) represent the population of the bacteria at the time t.

Since, the population grows exponentially, the population can be calculated as follows:

A (t) = Ao ×  e^{kt}

A (t) is teh final population, Ao is the initial population, e is the exponential, k is rate and t is time.

A (t) = 71  × e^{0.16\times t}

For t = 3 hours

A (t) = 71 × e^{0.16\times 3}

A (t) = 114.7.

The population of bacteria after 3 hours is 114.7.

6 0
3 years ago
List the kind of features you might expect to see near the edges of plates like these 2 plates that are coming together.
Artyom0805 [142]
<span>Some features you may expect to see at the site where two plates converge, or a convergent boundary, would be mountains and volcanoes. It may even form a chain of volcanoes. Earthquakes are likely as well.</span>
7 0
3 years ago
Other questions:
  • What process in the Earth’s early atmosphere allowed land-dwelling species to evolve?
    15·2 answers
  • How does the energy Of a reaction change when it is catalyzed by an enzyme?
    13·1 answer
  • During the time when humans moved from Africa throughout the world,
    12·1 answer
  • What is contained in the xylem tissues that travel from the roots to the leaves?
    5·2 answers
  • During a speculum inspection of the vagina, the nurse would expect to see what at the end of the vaginal canal?
    8·1 answer
  • Why is homeostasis important to the human body?
    12·1 answer
  • What happens during ovulation?
    15·1 answer
  • Name 2 parts of a lipid molecule
    6·1 answer
  • Please help this is a 7th grade science problem
    13·2 answers
  • Describe how compartmentalization allows a proton gradient to be achieved.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!