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
arsen [322]
3 years ago
6

I NEED AN HONEST ANSWER, PLS HELP!

Biology
1 answer:
Vikki [24]3 years ago
7 0

HAVE THEIR OWN FUNCTION

You might be interested in
Copper is used in a household wiring because?
a_sh-v [17]
Because it is malleable and doesn't melt/burn easily.

8 0
3 years ago
Which statement is correct concerning the cell walls?
svetlana [45]

Answer:

Option B

Explanation:

6 0
3 years ago
Why aren't there many large carnivores?
Anika [276]

Answer:

Technically, the largest ever marine predator known thus far - the blue whale - is, for now, alive and well, but I know what you mean. You’re not talking about filter-feeders, or fish-eaters, you mean macropredators.

The last truly enormous macropredator in our oceans was probably Carcharocles megalodon, which went extinct about 3.6 million years ago. Other recent examples include the terrifying sperm whale Livyatan melvillei (which disappeared 8.9 mya) and other megatoothed sharks like C. chubutensis.

So, why did the giants go away? The answer, in truth, is likely multi-faceted. Here are some major promising hypotheses, or at least contributing factors:

Whales have declined. Giant sea carnivores like C. megalodon and Livyatan relied on marine mammals - specifically baleen whales. During the Pliocene, the Americas connected and the Central American Seaway was closed. This seems to have triggered a significant decline in the diversity of tropical whales, and would thus limit food availability for huge, energy-hungry predators.

Things got too cold. The extinction of megalodon and other giant ocean predators roughly coincides with the trend of decreasing temperatures the Pliocene brought. Giant sharks in particular, not being fully warm-blooded, would suffer from this, and it would also mean a decline in food supply. You can even see a sudden cold snap just about when Carcharocles went extinct, 3.6 mya.

Smaller predators outcompeted them. The niche of Carcharocles and the macroraptorial sperm whales is arguably still filled today - by the killer whale. Many orca pods specialize in hunting whales or other marine mammals. However, killer whales and their ancestors were perhaps more opportunistic, fast, intelligent and indeed adaptable than the massive, solitary hunters.

Ironically, the largest ever marine predator owes its existence to the demise of the largest ever marine macropredators. Since the extinction of macroraptorial sperm whales and Carcharocles megalodon, baleen whales have been gradually increasing in size, for they no longer need to be as fast and agile. Because of this, we have the privilege of sharing our world with the largest animal known to have ever lived - the blue whale.

8 0
3 years ago
Identify which molecules the bag is permeable and impermeable to. Justify your answer.
Oksana_A [137]

Answer:

ganda mo po hehehehehe

Explanation:

ano

7 0
2 years ago
Why does the temperature increase in the stratosphere
tamaranim1 [39]

Answer:

The increased temperature in this layer is due mainly to UV absorption by various chemical species, including ozone and molecular oxygen present in the stratosphere. Maximum heating takes place in the upper part of the stratosphere. Because of the stable air, pollutant mixing is suppressed within this layer.

3 0
2 years ago
Other questions:
  • Acids and bases have many uses around the home and in industry.<br> a. True<br> b. False
    5·2 answers
  • ___ is one argument against gradualism as an evolutionary model
    5·1 answer
  • In general what would a scientist do after forming a testable question
    13·1 answer
  • How is an apex consumer different from a primary consumer? Give an example.
    13·1 answer
  • How to tell if a fossil is older
    15·1 answer
  • Which environmental hazard is directly related to nuclear power production?
    9·2 answers
  • What diseases do air pollutants cause?
    10·2 answers
  • PLZ HELP ME ASAP
    15·2 answers
  • Strenuous exercise leads to muscle cramp give reason​
    5·2 answers
  • Q3.29. Three of the following statements are reasons why climatologists have considerable confidence in global climate models (G
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!