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algol [13]
3 years ago
15

Please just help with these few! Also, these are my answers.

Biology
1 answer:
Snezhnost [94]3 years ago
5 0

For the first one, electrons travel around the nucleus in fixed energy levels with varying energies.

Second one, protons, neutrons, and electrons have a mass, but electrons have far less mass

Third one, cations and protons

Fourth, not sure.

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Which genes would a crop scientist most likely insert into a crop to protect it from droughts and insects?
Aleonysh [2.5K]
Commonly, genes from bacteria are inserted into a crop's chromosomes to produce pesticide substances to kill insects

For drought, I'm not fully sure, but Maize is a very drought resistant crop often introduced to communities which receive little rainfall. Maybe they take a gene from the maize crop and insert it into the chromosomes
8 0
3 years ago
What category do the individual organisms we can see with our naked eye fall in to?
Pani-rosa [81]

The Eukarya domain.

The organisms can be divided into three domains, based on the type of cell that the organism is made of:

<span><span>Bacteria domain: cells do not contain a nucleus.
</span><span>Archaea: cells don't contain a nucleus and they have a different cell wall from bacteria.</span><span>
Eukarya
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5 0
3 years ago
List three properties of stars
andreev551 [17]
Radius temperature and brightness
7 0
4 years ago
11.1 The Science of Ecology Lesson 11.1: True or False Name __________________ Class ______________ Date ________ Write true if
tangare [24]

Answer:

See explanation below

Explanation:

1. Biotic factors include sunlight, soil, temperature, and water. FALSE

Biotic factors include animals, plants, fungi, bacteria and protists.

2. Like nutrients and water, energy also recycles through an ecosystem. FALSE

3. An ecosystem consists of all the biotic and abiotic factors in an area and their interactions. TRUE

4. Herbivores are a necessary link between producers and other consumers. TRUE

5. A niche refers to the place an organism lives within its ecosystem. TRUE

6. Dung beetles eat animal feces. TRUE

7. Autotrophs make their own food. TRUE

8. Organisms use 90% of the available energy at each trophic level. FALSE

9. Carnivores include lions, polar bears, hawks, frogs, salmon, and deer. FALSE

Deer is a herbivore.

10. Biomass increases at the upper levels of a food chain. FALSE

11. Producers occupy the first trophic level. TRUE

12. Scavengers include vultures and raccoons. TRUE

13. In a complex ecosystem, it is likely that two different species will occupy the same niche. FALSE

14. The habitat is the role of a species in its ecosystem. FALSE

15. A food web shows how energy flows through an ecosystem. TRUE

4 0
2 years ago
10. A battery-operated alarm
Ksju [112]

Answer:

Chemical Energy!

Explanation:

A Battery is made of chemical energy!

3 0
3 years ago
Read 2 more answers
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