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atroni [7]
3 years ago
6

Arms extend from the middle outwards and tube feet for oxygen

Biology
1 answer:
Nezavi [6.7K]3 years ago
8 0

Insects, arachnids, and crustaceans  

Insects have 3 body segments. (head, thorax, abdomen)

Have a hard exoskeleton made of chitin.

Appendages be used for feeding, defense, sensory and reception.

Invertebrate phyla that obtains oxygen by using gills (marine) or air tubes (terrestrial.)

Use pincers and stingers as attack weapons to defend themselves

Characterized by having jointed legs, segmented bodies, and sometimes wings

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Question 7: What might be some implications of Robert Hazen’s experiments
Angelina_Jolie [31]

Answer:

Robert Hazen’s studied enviromental and biological processes that might have been critical for life, and also for the formation of approximately two-thirds of Earth's mineral species (see Hazen et al., 2008; Gonzalez & Richards 2020) .

Explanation:

Hazen provided evidence about how first organic molecules were generated on the primitive earth millions of years ago. He observed that high-pressure hydrothermal vents may provide food for underwater ecosystems. It represents a piece of critical evidence on the origin of life.

You can read these articles that are certainly clarifying in the description of his experiments and discoveries:

1- Hazen, R. M., Papineau, D., Bleeker, W., Downs, R. T., Ferry, J. M., McCoy, T. J., ... & Yang, H. (2008). Mineral evolution. American Mineralogist, 93(11-12), 1693-1720.

2- Gonzalez, G., & Richards, J. W. (2020). The privileged planet: how our place in the cosmos is designed for discovery. Gateway Editions.

6 0
3 years ago
The drawing shows a picture of a flower called a water lily that grows in the wetlands of Florida.
Airida [17]

Answer: it’s fertilization

Explanation: Fertilization in flowering plants happens through a process called pollination. ... Fertilization occurs when one of the sperm cells fuses with the egg inside of an ovule. After fertilization occurs, each ovule develops into a seed. • Each seed contains a tiny, undeveloped plant called an embryo.

7 0
3 years ago
You are studying the amino acid sequence of a protein shared by four organisms. You want to know which organism is most closely
aksik [14]
Well, I need the chart first of all, but second, If you have to find out which one is closely related to A, just take the amino acid sequence and compare the sequence to each organism, and which ever one has the most related sequences, is the closely related organism. 
6 0
3 years ago
How do we determine the effects of the biotic and abiotic factors in the ecosystem?
Luba_88 [7]

Explanation:

please mark me brainliest

8 0
3 years ago
What is the difference between the structure and function of carbohydrates, lipids, proteins and nucleic acid?
Pavel [41]

Carbohydrates- cellulose cell wall in plants, chitin exoskeleton & fungal cell wall

Lipids- cell membrane (phospholipids)

Protein- Fibrous ( skin, fingernails, horns, feathers)

Necleic acid- stores genetic info(dna)

5 0
3 years ago
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