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
Novosadov [1.4K]
3 years ago
15

Why do blood vessels and lymph vessels have valves?

Biology
1 answer:
OLEGan [10]3 years ago
3 0
Lymph vessels have one-way valves in order to prevent the back flow of lymphatic fluid. Blood vessels have valves in order to keep the blood flowing in one direction.
You might be interested in
What does the stability of an atom mean
igomit [66]

Explanation:Es cuando la interacción nuclear que experimentan los protones y los neutrones son mayores que la fuerza de repulsión eléctrica

de los protones

Es estable cuando existe un equilibrio entre las fuerzas que actúan, o las fuerzas atractivas son mayores que las repulsivas

6 0
3 years ago
HELPPPPP ASAP
DedPeter [7]

Answer:

GACCTG (the fourth option)

Explanation:

To find the correct complementary strand, we need to know this simple rule:

T always pairs with A and C always pairs with G.

So whatever letter you have in the DNA strand, the complementary strand will have the complement to it. In this case, we have CTGGAC. The complement of C is G, for T it is A, and so on. Therefore, the correct complementary strand is GACCTG (the fourth option).

6 0
2 years ago
Deep, cold water is the __________. Warm, shallow water is the ___________.
Bond [772]

Answer:

densest, least densest

Explanation:

7 0
3 years ago
Which elements are the most abundant in living organisms?
vitfil [10]

Answer:

oxygen , carbon , hydrogen , nitrogen , phosphorus , sulfur are some examples

4 0
3 years ago
Which body part is vestigial in humans?
Stels [109]

Answer:

The answer is the 2nd picture: the coccyx bone in humans.

Explanation:

Vestigial Structure:

Structures or anatomical features that do not currently serve a function is the bodily processes of a living organism. Vestiges are believed to have performed active functions in the organism's ancestors throughout its evolutionary history.

Coccyx Bone:

The coccyx or tailbone is an evolutionary remnant of our tree dwelling ancestors. Coccyx has no use in modern humans as we do not need to climb trees.

The coccyx in modern humans serves as an anchor for muscles.

5 0
3 years ago
Other questions:
  • A magnet placed against the wall of a metal shed falls to the ground, where it attracts a nail. What is the most likely explanat
    15·2 answers
  • What is the purpose of an election carrier
    8·1 answer
  • What sugar is found in dna? In rna?
    15·2 answers
  • A seed only germinates when environmental conditions are good. True or False
    13·1 answer
  • This is a small band of dense, white, fibrous elastic tissue that connects the ends of bones together in order to form a joint.
    13·2 answers
  • What activity/activities contribute(s) to making the human species the most significant agent of environmental change on Earth
    8·2 answers
  • Number the following steps in the correct order and tell which stage it occurs in:
    7·1 answer
  • You are monitoring the results of laboratory tests performed on a client admitted to the cardiac icu with a diagnosis of myocard
    11·1 answer
  • Cholesterol is an essential component of cell membranes.<br><br> True<br> False
    7·1 answer
  • What is so special about Earths climate change over the last 5 years???
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!