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
Natalija [7]
3 years ago
10

The first line of defense involves which structure(s)?

Biology
2 answers:
AleksandrR [38]3 years ago
8 0

Answer: [B] Skin

Explanation:

iogann1982 [59]3 years ago
4 0

Answer:

Skin

Explanation:

You might be interested in
Polygons EFGH and E'F'G'H' are shown on the coordinate grid:
Igoryamba

Answer:

GJ

Explanation:

GY NJUU' GF8N

5 0
4 years ago
What does the complete spectrum of light all included
allochka39001 [22]
Ultraviolet or all wavelengths
7 0
3 years ago
Read 2 more answers
Ozone in the troposphere is necessary to protect Earth's surface from harmful UV radiation.
romanna [79]

Answer:

False

Explanation:

In the troposphere, near the Earth's surface, human activities lead to ozone concentrations several times higher than the natural background level. Too much of this ground-level ozone is 'bad' as it is harmful to breathe and also damages vegetation.

The stratosphere or “good” ozone layer extends upward from about 6 to 30 miles and protects life on Earth from the sun's harmful ultraviolet (UV) rays.

7 0
2 years ago
A rock formed from the remains of living organisms. the rock is pale in color and soft. the rock is probably a
mario62 [17]
Sedimentary rock is the answer
7 0
4 years ago
True or False: Eye Color: Blue and Brown and Freckles: Freckles or no freckles are examples of human traits that have 2 variatio
lesantik [10]

Answer:

Explanation:

True

4 0
3 years ago
Other questions:
  • In what way would a harsh winter most likely affect the rabbit population size?
    10·1 answer
  • An ethic is a set of rules that determines _____.
    7·2 answers
  • Why do increased temperatures decrease photosystem II activity?
    12·1 answer
  • What is prothrombin?a.​A protein needed for bone formation b.​A protein that decreases the “stickiness” of red blood cells c.​A
    7·1 answer
  • How do I find the possible blood types of someone’s baby
    9·1 answer
  • Which of these statements is false? Veins always carry blood toward the heart. Veins can carry oxygen-rich blood. Arteries alway
    9·1 answer
  • What is the relationship between the zooxanthellae and the hard coral, the remora and the manta ray, the tiger shark and the gre
    5·2 answers
  • Please help.
    8·1 answer
  • Would a cross of two
    6·1 answer
  • What are the three main componets of dna molecule?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!