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swat32
3 years ago
13

4a. By 40-60 years after farm fields had been abandoned, the amount of herbaceous plants

Biology
1 answer:
Mila [183]3 years ago
5 0

Answer:

See the answer below

Explanation:

The amount of herbaceous plants in an abandoned farm field will keep decreasing with time and the amount of trees would be increasing instead <u>due to successional forces.</u>

Succession refers to the gradual change in the species structure of a community with time. Early successional species usually colonize new habitats and with time, they are replaced with late successional species until a relatively stable community, climax community, is established.

<em>Herbaceous species on abandoned farmland represent early successional species and as time goes on, they will be replaced by mid to late successional species in the form of shrubs and trees until a relatively stable community is formed. Hence, herbs would be decreasing while trees would be increasing. </em>

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Fruit ripening because of
ArbitrLikvidat [17]

Answer:

It's either positive feedback or neutral feedback (I can decide which one fits more)

Explanation:

With some fruits, it speeds up the ripening process depending on the rise in ethylene

6 0
3 years ago
Imagine you are a dietician. You are treating a patient who has diabetes. The patient can’t have too many carbohydrates that are
jarptica [38.1K]
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3 0
3 years ago
Tiktaalik had a combination of fishlike and tetrapod-like characteristics. which were the tetrapod-like characteristics? select
klemol [59]

The tetrapod-like characteristics are;  

a neck, flat head with eyes on top and interlocking ribs.

Tiktaalik is a large fresh water fish that has both fishlike and tetrapod-like characteristics. Tetrapods are four-legged vertebrates such as amphibians, reptiles. Tiktaalik has scales and gills like fishes but it also possesses unusual fins, a neck, interlocking ribs and flattened head with eyes on top (similar to the head of a crocodile).

3 0
3 years ago
If a cell is isotonic in a 80% sucrose solution, how will the movement of water across the cell membrane affect the size of a ce
Alchen [17]

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4 0
3 years ago
Read 2 more answers
Interneurons excite alpha motor neurons, which in turn excite the muscle. Alpha motor neurons send efferent messages to the quad
dangina [55]

The question is incomplete. The complete question is as follows;

Examine and characterize the two motor pathways in the stretch patellar reflex.

A) Alpha motor neurons send efferent messages to the quadriceps, while parallel efferent messages to the hamstrings are reduced.

B) Alpha motor neurons send efferent messages to excite the quadriceps and the hamstrings are reduced.

C) Alpha motor neurons activate the quadriceps. Once the quadriceps have contracted, alpha motor neurons inhibit the hamstrings.

D) Interneurons excite alpha motor neurons, which in turn excite the muscle.

Answer:

Alpha motor neurons send efferent messages to the quadriceps, while parallel efferent messages to the hamstrings are reduced.

Explanation:

Neuron is the structural and functional unit of the nervous system. The neurons can be classified as sensory neuron, motor neuron and interneuron based on their function.

The knee reflex is known as patellar reflex that involves in the movement of knees and stretching of patellar tendon. The efferent message is send by alpha motor neuron that are located in the anterior horn of the spinal cord. This send to quadriceps that results in the muscle contraction. In this process, the hamstrings messages are reduced that plays an important role in patellar reflex.

Thus, the correct answer is option (A).

3 0
3 years ago
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