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
natka813 [3]
3 years ago
8

Which of these is a flap that shuts off the passage to the trachea and lungs?

Biology
1 answer:
lara31 [8.8K]3 years ago
5 0
Were going to need you to put the multiple choices up too.
You might be interested in
Explain how soil is important to animal life
Cloud [144]

Answer:

plants!

Explanation:

the soil helps the plants grow which in result animals eat to get health mostly herbivores they eat plants

5 0
3 years ago
Read 2 more answers
Female sex cells are called what
EleoNora [17]
The female sex cells are called the egg and Male sex cells are called the sperm. Hop this helped.
3 0
3 years ago
Who created the earliest system for the classification of animals?
horsena [70]
ARISTOTLE first classified organisms.... in 4th century B.C.
5 0
3 years ago
A biologist has been studying two populations of trout in Montana for the last 25 years, when the two populations were establish
ludmilkaskok [199]

Answer:

Positive natural selection.

Explanation:

The positive natural selection is a type of natural selection that increases the frequency of an allele or trait when it is advantageous for the population. What happened in the example is that the mouth with the slight change in  morphology (trait)  was more advantageous for the population in the south in relation to the  ancestral morphology  (still preserved in the population in the north), and therefore its frequency increased. This, in turn, is due to the fact that the food (prey) is not the same in the two habitats (north and south).  The specific prey in the south,  caused the new morphology to be selected, (increasing the frequency of individuals with the new mouth),  becasue probably that trait allows the trouts in the south to hunt more effectively.

8 0
3 years ago
Which of these materials cannot cross the placenta from mother to fetus?
lesya692 [45]

Answer:

alcohol is the answer i think

7 0
2 years ago
Read 2 more answers
Other questions:
  • Which amino acid helps convert lipids to energy; has antiviral, bone-healthy, and heart-healthy effects; and helps produce colla
    5·1 answer
  • One of the most severe consequences of habitat degradation is the _____ of a population.
    13·1 answer
  • Chewing a bite of bread mixes it with saliva and facilitates its chemical breakdown. This is most likely due to the fact that __
    6·1 answer
  • Rocks above a fault plane
    12·2 answers
  • What is this 5,0000x345,00000?
    5·1 answer
  • Jaleel and Lisa are simplifying the expression 2 (x minus 2) + 2 as shown. Jaleel's Method 2 (x minus 2) + 2 = 2 x minus 4 + 2 =
    15·1 answer
  • What is the process green plants use to make their own food?
    10·2 answers
  • Why are some areas in Europe seeing a partial solar eclipse while others are observing a total solar eclipse ?
    5·1 answer
  • Explain how surface water is able to form on permafrosts able to form on permafrost
    9·2 answers
  • Grapes apples pears mangoes and cucumbers are all fruits
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!