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Naily [24]
2 years ago
8

Fossils reveal the body structures of ancient organisms. What other information can be concluded or inferred from studying fossi

ls? Select THREE correct answers. *
A. The ecology of ancient environments

B. The colorations and markings of ancient organisms

C. Evolutionary lineages from common ancestors

D. Sequential nature of groups of ancient organisms
Biology
1 answer:
nata0808 [166]2 years ago
4 0

Answer:B C A

Explanation:

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Paul ekman and walter friesen traveled to new guinea to study the meaning of various facial expressions in the primitive south f
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The conclusion they reached was that the six major emotional expressions appear to be universal.

<h3>What are facial expressions?</h3>

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2 years ago
The ______ system is assisted by the lymphatic system and the physical barriers of the skin and gastrointestinal tract.
mezya [45]

Answer:

The correct answer is- Immune system

Explanation:

There are physical, chemical and immunological barriers present in our body which helps us to protect from the foreign antigen. They all assist each other and helps in pathogen removal from our body.

The physical barrier includes skin, gastrointestinal tract, respiratory tract, etc which do not allow the microbe to enter the body. Chemical barriers include tear, saliva, acid in the stomach which kills microbes on the body surface.

Immune cells like macrophages, B cells kills microbes when it gets in the body. Lymphatic system also contain immune cells and helps in microbe removal.  

So the immune system is assisted by physical barrier, chemical barrier, and lymphatic system.

4 0
3 years ago
Vascular plants, like Fern, show alternation of generation. which represents a Gamo type in the life of fern? a. rhizomes b. Pro
Elan Coil [88]

Answer: (B) Prothallus

Explanation: Prothallus is the gametophyte stage in the life of <u>a fern or other pteridophyte</u>.

8 0
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The existence of the cell was unknow before the invention of what ?
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Before the development of microscopes, the existence of cellular life was unknown. By examining a piece of cork, Robert Hooke first saw and named cells. Antony van Leeuwenhoek was the first person to see living cells.
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3 years ago
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