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stich3 [128]
3 years ago
5

Which statement best illustrates a biotic or an abiotic factor that is often found in a city park?

Biology
2 answers:
frutty [35]3 years ago
6 0

Answer: Rocks are abiotic

Explanation: They arnt alive so how can it be biotic?

anastassius [24]3 years ago
5 0

Answer: the second choice is correct

Explanation:

Decaying leaves are a biotic factor. Rocks, water and oxygen are all nonliving, so they are abiotic factors.

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Put these words in order from the smallest to the largest level of organization of an organism.
Feliz [49]

Answer:

Atoms

Cells

Tissues

Organs

Organ Systems

Organism

Explanation:

In order of size smallest to largest.

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Maybe A & D? In not sure
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Antennae development in ants is thought to be a trait controlled by maternal effect. In ants, zig-zag coils are dominant to curl
Schach [20]

Answer:

a. Her mother has zig-zag antennae.

b. Her brother has zig-zag antennae.

Explanation:

<u>Available data</u>:

  • Antennae development ⇒ controlled by maternal effect
  • Zig-zag coils are dominant
  • Curly coils are recessive
  • A female develops zig-zag coils

Maternal effect: Refers to the influence of the “environment provided by the mother” on the progeny phenotype. The mother´s genotype directly determines the progeny phenotype. Even though the progeny has a different genotype, it is irrelevant, as well as the father´s genotype or phenotype. This means that no matter what is the genotype of the offspring, all of them will express the same phenotype as their mother. The maternal effect is commonly seen in insects and might be seen in some mammals and plants.

So, if a female has zig-zag coils, this means that the mother also has zig-zag antennae and that all the brothers and sisters of this female ant have zig-zag antennae, independently of their genotype.

a. Her mother has zig-zag antennae ⇒ True. The trait is inherited from the mother.  

b. Her brother has zig-zag antennae ⇒ True. The whole progeny will express sig-zag antennae.

c. This female carries the zig-zag allele ⇒ Not necessarily.

d. This female's offspring will have zig-zag antennae ⇒ Depends on it´s genotype

3 0
3 years ago
Surfactant helps to prevent the alveoli from collapsing by ________.
hodyreva [135]
I<span>nterfering with the cohesiveness of water molecules, thereby reducing the surface tension of alveolar fluid.</span>
8 0
3 years ago
The fluid that fills the joint cavity in a diarthrosis is produced by the __________.
GenaCL600 [577]

Answer:

Synovial membrane

Explanation:

The joint cavity is filled with synovial fluid, secreted by the synovial membrane (synovium) which lines the inside of the articular capsule. The synovial fluid is the fluid that lubricate the lining of joints and the sheaths of the tendons.

5 0
4 years ago
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