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
nexus9112 [7]
3 years ago
15

PLEASE HELP

Biology
2 answers:
Marrrta [24]3 years ago
6 0

Answer:

I'm pretty sure that the answer is d :)

Explanation:

<3

777dan777 [17]3 years ago
6 0

Answer:

yeah

Explanation:

Mechanical Defenses

The first line of defense in plants is an intact and impenetrable barrier composed of bark and a waxy cuticle. Both protect plants against herbivores. Other adaptations against herbivores include hard shells, thorns (modified branches), and spines (modified leaves). They discourage animals by causing physical damage or by inducing rashes and allergic reactions. Some Acacia tree species have developed mutualistic relationships with ant colonies: they offer the ants shelter in their hollow thorns in exchange for the ants’ defense of the tree’s leaves.

You might be interested in
Some bed bugs had mutations in their genetic code which allowed them to survive the chemical pesticide and they produced chemica
Salsk061 [2.6K]

Answer:

Random mutations led to evolution of pesticide resistance genes in bed bugs.

Explanation:

Random mutations in genome of bed bug imparted them the pesticide resistance. Since the bed bugs having the mutation of pesticide resistance were able to survive under presence of pesticides, this variation was favored by natural selection. The bugs with pesticide resistance transmitted this trait to their progeny. In time, the bed bug population consisted of most of the bugs having the pesticide resistance.

8 0
3 years ago
A. What is exponential growth?
Over [174]

Answer:

A process that increases quantity over time.

Explanation:

The formula for exponential growth of a variable x at the growth rate r, as time t goes on in discrete intervals (that is, at integer times 0, 1, 2, 3, ...), is:

X_{t}= X_{0} (1+r)^{2}

Exponential growth is a process that increases quantity over time. It occurs when the instantaneous rate of change of a quantity with respect to time is proportional to the quantity itself.

4 0
2 years ago
In which step of cellular respiration is oxygen used
vazorg [7]
In aerobic respiration.there are stages in it.but I think you are looking for word "Krebs cycle"
8 0
3 years ago
The optimum environment for pepsin is?
Anna007 [38]
<span>Pepsin is an enzyme that breaks down proteins into amino acids in the stomach (where the pH is 1-3). Pepsin needs to be in an acidic environment to be activated. The optimum temperature is between 30 oC and 40 oC because the average human body temperature is 37 oC. The optimum pH is the acidic one because your stomach has an acidic pH.</span>
6 0
3 years ago
State the plant phylum which is characterised by the absence of vascular tissue​
Alexxx [7]

Answer:

Bryophytes is the answer.

4 0
3 years ago
Read 2 more answers
Other questions:
  • PLZZZ HELLLP FAAAAST ASAP BRAINLIEST!!!!!
    15·1 answer
  • Sweating while playing basketball because of a higher-than-normal body
    9·1 answer
  • What is the complementary base sequence of the DNA strands of the template strand reads TTGCACG
    5·2 answers
  • Why are tapeworms parasites to brine shrimps?
    15·2 answers
  • Please help with answer
    9·1 answer
  • Which of the following statements regarding mutations is true? Mutations -
    9·1 answer
  • Fast reproduction by binary fission enables bacteria to cause infections in other organisms. quickly modify their DNA to changin
    12·2 answers
  • What can you state about the orbits of the various planets​
    9·1 answer
  • There are many stars and other objects in the universe. True False
    6·2 answers
  • An oak tree provides food for many animals. The oak tree is found at which level of the energy pyramid?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!