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Alex73 [517]
3 years ago
6

I need help from 20-23

Biology
1 answer:
Mashcka [7]3 years ago
3 0
20. The answer is 1 (Precambrian)
21. The answer is 4 (Pennsylvanian)
22. The answer is 2 (Bony Fishes, Dinosaurs, and Mammals)
23. The answer is 2 (Reptiles)
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List the biotic and abiotic factors in this image
BabaBlast [244]

Answer:

Biotic:

  • Bear
  • Moose
  • Trees
  • Eagle
  • Bird
  • Fish
  • Ducks
  • Otter
  • Ferns
  • Grass
  • Butterfly

Abiotic:

  • Rocks
  • Water
  • Clouds
  • Mountain

Explanation:

Remember that biotic factors are living organisms while abiotic factors are things that are non living organisms.

Hope this helps.

8 0
3 years ago
You stumble upon an unidentified arthropod with no antennae and eight legs. this organism is likely closely related to _____.
lakkis [162]
Ticks .
Characters : 2 Body segments , 8 legs and No Antenna .
4 0
3 years ago
How come people feel pain?
Morgarella [4.7K]

Answer:

Hope this helps!

Explanation:

"When your body is injured in some way or something else is wrong, your nerves (cells that help your body send and receive information) send millions of messages to your brain about what's going on. Your brain then makes you feel pain." -Why Do I Have Pain? (for Kids) - Nemours KidsHealth

I didn't write that, but I gave credit to whoever did.

5 0
3 years ago
The illustration shows a kind of animal that is a free living organism what is the common name of the group that contains this o
Sladkaya [172]

Answer:

the group that contains this organism is protozoa

4 0
3 years ago
Gomez found the masses of three rocks for science project .the first rock had a mess of 19.28 grams, the second rock had a mass
ziro4ka [17]
The combined mass of rock 1 and 2 = 19.28 + 25.3
= 44.58

Difference between rock 3 and combined rocks 
= 46.3 - 44.58
= 1.72 grams

therefore, the third rock was 1.72 grams greater than the combined mass of the other two rocks. 
3 0
4 years ago
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