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slega [8]
3 years ago
8

Evolution can occur at different rates, however, for evolution to occur, there must be?

Biology
1 answer:
Roman55 [17]3 years ago
4 0
Only the successful competitors will reproduce, mortality is very high. Four (4) conditions for natural selection. Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population.
A third basic principle of evolution is competition. Replicating molecules compete with one another for available resources such as chemical precursors, and the competition allows the process of evolution by natural selection to occur. Variation will produce differing populations of molecules.
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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
3 years ago
Transport of a compound across a cell membrane (down a concentration gradient) was measured at several concentrations. The prese
Tanzania [10]
Transport of a compound across a cell membrane (down a concentration gradient) was measured at several concentrations. The presence or absence of ATP had no effect on the transport of this compound. ... Why are the lipid bilayers in cells called "selectively permeable"? They are permeable to some substances but not others.
7 0
3 years ago
Can someone help me with number 39 this is late and i need to turn it in. If youre answer is right i will brainliest.
babunello [35]

Answer:

I think its d I'm not sire sorry if I do t help you

3 0
3 years ago
Read 2 more answers
Objective has the largest depth of field.
TiliK225 [7]

Answer:

The correct answer is option - C. low power objective.

Explanation:

In microscopes, low power objectives have a wide field of view and use to study the many smaller specimens or large specimens. 10X is the power of the low objective.

To study the depth of the field the lower objective rotated and aligned on the place over the specimen. When you move to high power objective the field of view gets close in and only can study the smaller specimen or small section of a large specimen.

Thus, the correct answer is option - C. low power objectives.

5 0
4 years ago
Read 2 more answers
Black (B) is co-dominant to white (W). What percentage of the offspring will be black-and-white if a black cat is crossed with a
Feliz [49]

Answer:

100% of offspring will be black and white

Explanation:

BW = Black and white

Because 4 out of 4 offispring fom the punnett squares have the genotype of BW, 100% of the offspring will be black and white

3 0
3 years ago
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