When you step on a sharp object we move our foot away at once . what type of response is this?

Answers

Answer 1
Answer: It is innate response (reflex), automatic, occurs through the stimulation of specific receptors, nerve endings and sensory nerve stimulation of effector organs (mainly muscles) through the motor nerves or autonomous. Reflex reaction proceeds without awareness, it means that the nerves cause reflex (stimulate muscles) before notifying the brain.

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Which best compares habitat and niche? Niche is a place in which organisms live, and habitat is the way in which an organism fits into its habitat. Habitat is a place in which organisms live, and niche is the way in which an organism fits into its habitat. Habitat is a group of organisms that live in an area, and niche is a specific species that lives in that area. Niche is a group of organisms that live in an area, and habitat is a specific species that lives in that area.
Many different species of songbirds migrate into the United States and Canada from Central and South America each summer in order to take advantage of the caterpillars and other insects that hatch in the northern forests during the summer. Over the past several decades songbird populations have been declining. How might a decrease in the number of songbirds be expected to affect the trees in a northern forest?
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The theory of evolution through natural selection is considered a scientific theory because _____.

A land developer and several ecologists are discussing how a parcel of private land should be developed while saving 20 hectares as natural habitat. The land developer suggests that the 20 hectares be divided into twenty separate 1-hectare areas. The ecologists suggest that it would be better to have one intact parcel of 20 hectares. What is the significance of these different arrangements of the 20 hectaresA. The isolated hectare piots increase the ability of individuals to disperse from one habitat to another. B. The large plot will create more inbreeding in many species C. There really is no difference: they should both work equally well. D. The isolated plots are more vulnerable to edge effects.

Answers

The correct answer is option d. The isolated plots are more vulnerable to edge effects.

Land builders and ecologists are imparting special guidelines for saving the land of 20 hectares of herbal habitat. Both have a special technique for growing the land, the land developer indicates to divide the land into twenty-one-hectare regions. While the ecologist indicates that it might be higher to have one intact land. The land with remoted regions is extra susceptible to part consequences.

Edge consequences are the amendment or extrude withinside the shape of the network that affords at the brink of the 2 or extra than habitats. Areas with small habitat fragments display excessive part consequences.

What is ecology?

Ecology is the have a look at the relationships among dwelling organisms, together with humans, and their bodily environment. Ecology considers organisms on the individual, population, community, ecosystems, and biosphere level.

Hence concluding that isolated plots are more vulnerable to edge effects is the correct answer.

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Answer:

The correct answer is option D.

Explanation:

Land developers and ecologists are providing different suggestions for saving the land of 20 hectares of natural habitat. Both have a different approach for developing the land, the land developer suggests to divide the land to 20 one hectare areas. While the ecologist suggests that it would be better to have one intact land. The land with isolated areas is more vulnerable to edge effects.

Edge effects are the modification or change in the structure of the community that presents at the edge of the two or more than two habitats. Areas with small habitat fragments show high edge effects.

Thus, the correct answer is option D.

Mechanical weathering occurs at a greater rate in climates that are a. cold and wet. c. hot and dry. b. warm and wet. d. cold and dry.

Answers

the answer would be a. cold and wet. 
I believe that the answer is a.
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About 3 million Brazilian free-tailed bats live near Fredericksburg, Texas, in an abandoned railroad tunnel. Eighty percent of the free-tail's diet includes agricultural pests such as the cutworm, corn borer, and webworm moths. Each can eat its weight in insects nightly, and the whole colony may devour over 25 tons of moths per night. The bats return to the tunnel between midnight and daybreak, having traveled an average 25 to 30 miles to forage. As the population of bats increases, it is expected that the crop production in nearby areas will —

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As the population of bats increases, it is expected that the crop production in nearby areas will decreases.

How the population of bats can be affected?

The population of bats which can be affected by the numerous factors as to will its population increase or decrease, just as at any other organism. If the populations of their food source decrease, the bats will have less food, thus their numbers will decrease.

The same which shows deadly diseases spreads among them, as many will be infected and will die out. They also have predators, so if some of their predators has increase in its population, the population of bats will go down.

Therefore, As the population of bats increases, it is expected that the crop production in nearby areas will decreases.

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The increase in the population of free-tailed bats near Fredericksburg, Texas is expected to increase crop production in nearby areas.

As the population of free-tailed bats near Fredericksburg, Texas increases, it is expected that the crop production in nearby areas will increase. This is because the bats primarily feed on agricultural pests such as cutworms, corn borers, and webworm moths, which can damage crops. As the bats consume a large number of these pests, they help control their population and reduce crop damage.

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Type the correct form of the adverb.He acted very ____.
bad
badly
worse
worst

Answers

I just turned in my assignment. The correct answer is "badly".

So:

He acted very badly.

The cellular basis of muscular dystrophy is that some of a child's muscle cells A. have combined into a structure that cannot contract. B. lack DNA. C. lack a protein that enables them to withstand the force of contraction. D. have too much of a contractile protein and become overworked. E. have become haploid.

Answers

C lack of protein that enables them to withstand the force of contraction.

1. bones absorb vitaminA) vitamin a
B) vitamin b
C) vitamin c
D) vitamin d
2. Appositional growth ends in
A) infancy
B) adolescence
C) early adulthood
D) late adulthood
3. What is the name of process of the addition of new layers of bone
A) ossification
B) appositional growth
C) diaphysis
D) epiphysis
4. which of the following sections of the spinal column have five vertebrae
A) the cervical section
B) the thoracic section
C) the coccal section
D) the lumbar section
5. what provides the bone with flexibility and tensile strength
A) calcium
B) collagen fibers
C) vitamin D
D) adipose tissue
6. The process of moving body part around a central axis is
A) flexion
B) adduction
C) supination
D)rotation
7. The bone of the extremities are part of the
A) appendicular skeleton
B) axial skeleton
C) long bone group
D) medial skeleton
8. what type of bone is a skull bone
A) lone bone
B) short bone
C) flat bone
D) irregular bone
9. The shoulder is a type of ____ joint
A) plane
B) ball-and-socket
C) pivot
D) saddle
10. The skull and spinal column are part of the
A) Appendicular skeleton
B) axial skeleton
C) flat bone group
D) peripheral skeleton

Answers

1. The right answer is D.

Vitamin D is an organic substance necessary for the metabolism of the body. A large part of our needs (80%) is synthesized from a derivative of cholesterol under the action of UVB radiation from the sun, it is also for this reason that it is also called "sun vitamin" . The rest must be drawn from the diet.

It intervenes in the absorption of calcium and phosphorus by the intestines, then in the reabsorption by the kidneys. Indispensable for growth during infancy, it ensures the robustness of the human skeleton and prevents osteoporosis. After a certain age, the body does not synthesize vitamin D as easily.

2. The right answer is C

Growth can continue until the age of 25 in a man and 18 in women, and contrary to popular belief, it is not uncommon to grow to over 21 years and it is impossible to predict a growth stop or define the future size of any individual.

3. The right answer is A

Ossification always begins in the median region of the diaphysis, under the perichondrium, by a small ring of bone generated by osteoblasts arising on the inner side of the perichondrium; these cells secrete around them layers of ossein impregnated with calcareous salts; from this moment the perichondrium must be called the periosteum.

This same process of ossification extends under all the internal surface of the periosteum and reaches the neighborhood of the epiphyses.

4. The right answer is D

The lumbar vertebrae are vertebrae of the caudal part of the spine. They are located between the thoracic vertebrae and the sacrum.  They allow large flexion and extension movements, limited lateral flexion movements, and discrete rotations.

The most caudal lumbar vertebra articulates with the sacrum to constitute the lumbosacral hinge, junction between the mobile part and the fixed part of the column.

5. The right answer is B

Collagen is an extracellular protein found in vertebrates that forms insoluble fiber.

In bone, collagen is produced by osteoblasts and forms lamellae that give the bone its resistance to stretching. Collagen cartilage allows the joints to resist tensile forces.

6. The right answer is D

The bones forming the skeleton are articulated (by more or less mobile joints: if the bones of the skull remain welded to each other, the vertebral joints allow slight movements while maintaining their role of support, while the joints of the limbs assure rotations around axes with one (finger) or several (elbow) degrees of liberty).

7. The right answer is A

The appendicular skeleton of the human body is composed of 126 bones. The word appendicum is the adjective derived from the word appendix, which means part adjoined to something larger. From a functional point of view, the appendicular skeleton is intended for locomotion (lower limbs) of the axial skeleton, and for the manipulation of surrounding objects (upper limbs).

8. The right answer is C

The flat bones are composed of a spongy tissue in the center and a compact tissue on the outside. This type of bone structure forms cavities that protect the noble structures. This is the case of the skull, the thorax and the pelvis. In addition, they serve as an intersection with large muscle masses.

9. The right answer is B

The shoulder consists of three bones, the clavicle, the scapula or scapula and the humerus.

The mobility of the shoulder is provided mainly by the deltoid muscle, which provides power, and by the muscles of the cap, which initiate movement and stabilize the head of the humerus.

The rotator cuff is the name given to all the tendons that form a "hat" above the head of the humerus.

Between the head of the humerus and the acromion (outgrowth of the scapula), is a slip exchange called sub-acromial stock exchange.

10. The right answer is B

The axial skeleton consists of 80 articulated bones among 88 bones, all skeletal and mostly odd (and medial), forming the head and trunk. It includes the bones of the skull, spine, ribs and sternum, as well as the laryngeal bone, and represents 57 different articulated bones among 65 different bones.

Based on the information, it should be noted that bones absorb vitamin D) vitamin D.

What's vitamin D?

Vitamin D is an organic substance necessary for the metabolism of the body. A large part of our needs (80%) is synthesized from a derivative of cholesterol under the action of UVB radiation from the sun, it is also for this reason that it is also called "sun vitamin" . The rest must be drawn from the diet.

It intervenes in the absorption of calcium and phosphorus by the intestines, then in the reabsorption by the kidneys. Indispensable for growth during infancy, it ensures the robustness of the human skeleton and prevents osteoporosis. After a certain age, the body does not synthesize vitamin D as easily.

The correct option is D

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