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Blababa [14]
3 years ago
7

Explain whether opening and closing your eyes is voluntary or involuntary

Biology
1 answer:
shtirl [24]3 years ago
4 0
Hello there!

Closing your eyes is voluntary.


Hope I helped!

Let me know if you need anything else!

~ Zoe
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Which statement best describes the movement of carbon dioxide into or out
allsm [11]

Answer:

D it is taken in from the air

Explanation:

Carbon dioxide is in the air and plants use it to make food.

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3 years ago
How could we grow bacteria safely? We<br> don't want to risk getting sick.
MA_775_DIABLO [31]

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In an enclosed container or space.

Explanation:

if it is safely enclosed then no one can get hurt.

6 0
3 years ago
Why cycus are called conifer? give its 3major characteristics features​
Licemer1 [7]

Answer:

Cycads /ˈsaɪkædz/ are seed plants that typically have a stout and woody (ligneous) trunk with a crown of large, hard, stiff, evergreen and (usually) pinnate leaves. The species are dioecious, therefore the individual plants of a species are either male or female. Cycads vary in size from having trunks only a few centimeters to several meters tall. They typically grow very slowly[3] and live very long, with some specimens known to be as much as 1,000 years old.[citation needed] Because of their superficial resemblance, they are sometimes mistaken for palms or ferns, but they are not closely related to either group.

Cycads are gymnosperms (naked seeded), meaning their unfertilized seeds are open to the air to be directly fertilized by pollination, as contrasted with angiosperms, which have enclosed seeds with more complex fertilization arrangements. Cycads have very specialized pollinators, usually a specific species of beetle. Both male and female cycads bear cones (strobili), somewhat similar to conifer cones.

Cycads have been reported to fix nitrogen in association with various cyanobacteria living in the roots (the "coralloid" roots).[4] These photosynthetic bacteria produce a neurotoxin called BMAA that is found in the seeds of cycads. This neurotoxin may enter a human food chain as the cycad seeds may be eaten directly as a source of flour by humans or by wild or feral animals such as bats, and humans may eat these animals. It is hypothesized that this is a source of some neurological diseases in humans.[5][6]

Cycads all over the world are in decline, with four species on the brink of extinction and seven species having fewer than 100 plants left in the wild.[7] The plant has a very long fossil history, with evidence that they existed in greater abundance and in greater diversity before the Jurassic and late Triassic mass extinction events.

Explanation:

~Dr.Smiley~

(Jane)

8 0
2 years ago
Kussmaul respirations are an indication that the body is
Tanzania [10]

Answer:

Kussmaul respirations indicates the condition of acidosis and diabtetes  ketoacidosis

Explanation:

Kussmaul respiration refers to the labored and deep breathing pattern. Adolph kussmaul introduced the term Kussmaul respiration.

This respiration refers to the form of hyperventilation in which the amount of carbon dioxide is decreased in the blood. The metabolic acidosis alters the normal pattern of breathing and results in rapid and shallow breathing. The Kussmaul respiration is most common in ketoacidosis.

6 0
3 years ago
Select the Nuclear membrane closeup. How is the nuclear membrane similar to the cell membrane? Select the Nuclear membrane close
vova2212 [387]

Answer:

A nuclear membrane is a double membrane that encloses the cell nucleus. It serves to separate the chromosomes from the rest of the cell. The nuclear membrane includes an array of small holes or pores that permit the passage of certain materials, such as nucleic acids and proteins, between the nucleus and cytoplasm.

6 0
2 years ago
Read 2 more answers
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