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OleMash [197]
3 years ago
10

What three conditions must a fossil meet in order to be an index fossil?

Biology
1 answer:
Darya [45]3 years ago
5 0
It must be widespread, limited in geological time, and distinctive. 
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Which structures that distinguish a eukaryotic cell from a prokaryotic cell are part of the internal membrane system?
Nat2105 [25]

Answer:

nuclear membrane, endoplasmic reticulum, Golgi apparatus, and vesicle

Explanation:

The structures or organelles in internal membrane system in the cell do all production, processing and secretion function together. A prokaryotic cell does not contain any membrane bound organelles but Eukaryotic cells do have. Nuclear membrane has double membrane and golgi-rendoplasmic reticulum and vesicle contain single membrane so all these organelles are membrane bounded.

4 0
3 years ago
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What happens at each step of a dichotomous key?<br><br> PLEASE HELP ME!
Yuki888 [10]

Oh I know this, It narrows down its characteristics here is an example:

The first step in the key will be organized the following way:

1. a. wings covered by an exoskeleton

b. wings not covered by an exoskeleton

Next, the statements need to lead the observer to the next step to narrow the identification further:

1. a. wings covered by an exoskeleton go to step 2

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Step 2 needs to consist of a pair of statements that will allow for the identification of the ladybug and the grasshopper:

2. a. body has a round shape .ladybug

b<span>. body has an elongated shape .grasshopper</span> 


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3 years ago
Where are enzymes found in the digestive system
PIT_PIT [208]
It is found in proteins.
7 0
3 years ago
What are the sense organs in the human body?
Tems11 [23]

Answer:

The sense organs in the human body are  the eyes, ears, nose, tongue, and skin. The sense organs are the body organs by which humans are able to see, smell, hear, taste, and touch or feel. The five sense organs are the eyes (for seeing), nose (for smelling), ears (for hearing), tongue (for tasting), and skin (for touching or feeling).

(I'm so sorry if it's wrong)

Hope this helps!

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3 years ago
All chordates live in the ocean. True or false
Akimi4 [234]
True, Chordates are animals in Phylum Chordata.Chordates include all of the vertebrates, in which the notochord develops into a backbone, as well as some invertebrates. Invertebrate chordates include tunicates and lancelets.
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