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
Mariana [72]
4 years ago
7

Infer: what is the relationship between the evolution of bipedalism, the increase in cranial capacity, and the decrease in tooth

and mouth size of hominins? (hint: as cranial capacity increased, the use of sophisticated stone tools became more common.)
Biology
1 answer:
noname [10]4 years ago
3 0
When the organism become bipedal, they walk with 2 legs so there are 2 arms that were unused. Some of them try to use that hand by grabbing stick or stone, leading to tools. They start to think more to develop tools and their brain capacity become increased.
The ability to use stone tools will help in food digestion since it can break the food easier. This reduces the needs for bigger teeth/jaw.
You might be interested in
What are the steps of DNA in the correct order (1,2,3)
coldgirl [10]

Answer:

Replication, transcription, translation (it’s the central dogma of biology)

6 0
3 years ago
Read 2 more answers
Random orientation of homologous pairs of chromosomes during meiosis I results in alternative arrangements that contribute to ge
iogann1982 [59]

Random orientation of homologous pairs of chromosomes during meiosis I results in alternative arrangements that contribute to genetic variation in offspring. This is called "independent assortment".

<u>Explanation:</u>

The sets of homologous chromosomes, also recognized as bivalents or tetrads, align along the metaphase plate in a random order in metaphase I of meiosis I. Another way for cells to incorporate genetic variation is by spontaneous orientation. Mendel's independent assortment law stipulates that, independently of one another, the alleles of two or more different genes are sorted into gamets.

In other terms, for one gene, the allele that a gamete receives does not affect the allele that is obtained for another.Genetic recombination (by random segregation) and crossing over during meiosis creates daughter cells each containing different combinations of maternally and paternally coded genes.

4 0
3 years ago
A proton has a speed of 3.0 × 106 m/s in a direction perpendicular to a uniform magnetic field, and the proton moves in a circle
jeyben [28]

Answer:

The magnitude of the magnetic field is 0.156 T.

Explanation:

Given that,

Speed of a proton, v=3\times 10^6\ m/s

Radius of the circular path, r = 0.2 m

When the proton enters in the circular path, the centripetal force is balanced by the magnetic force such that :

\dfrac{mv^2}{r}=qvB\sin\theta

q is the charge on proton

Here, \theta=90^{\circ}

\dfrac{mv^2}{r}=qvB\\\\B=\dfrac{mv}{qr}\\\\B=\dfrac{1.67\times 10^{-27}\times 3\times 10^6}{1.6\times 10^{-19}\times 0.2}\\\\B=0.156\ T

So, the magnitude of the magnetic field is 0.156 T. Hence, this is the required solution.

3 0
3 years ago
An experimental diagram is shown in the diagram below:
vlabodo [156]

Answer:

Answer is <u>A</u>

Explanation:

This is because light energy is needed for plants to carry out photosynthesis. When plants photosynthesize, they absorb carbon dioxide gas and give out oxygen gas.

8 0
3 years ago
Read 2 more answers
Which of these is what DNA and RNA are? *
olya-2409 [2.1K]

Answer: DNA and RNA are both examples of nucleic acids

They consist of a strand of nucleotides with a phosphate group, a 5′ sugar and a nitrogenous base.

Extra info: DNA and RNA molecules are polymers. DNA is double stranded, whereas RNA is single stranded.

The nucleotides of DNA can pair together by base pairing, creating a strand that is complementary to its pair

Various types of RNA exist which have roles in protein synthesis as well as regulation of cellular programmes by fine-tuning gene expression.

4 0
3 years ago
Other questions:
  • If a color blind man marries a woman who is homozygous for normal vision. it is possible that one of their sons could be color b
    12·1 answer
  • What are the atmospheres of Venus and Mars primarily composed of?
    9·2 answers
  • FIRST ONE WHO ANSWERS THIS QUESTIN WILLLL BEEE MARKED BRAINLIEST.
    7·2 answers
  • PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!
    12·1 answer
  • 2. Which part of the cell membrane helps move large molecules into and out of the cell?
    10·1 answer
  • How had/has human activity influenced the tropic cascade of the aleutian islands kelp forest
    11·1 answer
  • An estuary that normally shelters juvenile fish and other organisms has become filled with silt and pollution. How will this aff
    5·1 answer
  • Describe a mercurial clinical thermometer.​
    13·2 answers
  • Duration of hypotension before initiation of effective antimicrobial therapy is the critical determinant of survival in human se
    7·1 answer
  • Which statement describes a method of sexual reproduction that occurs in plants? *A. Stem cuttings are placed in water and grow
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!