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Amanda [17]
3 years ago
8

Which of the following characteristics are expected in the first animals to have colonized land?

Biology
1 answer:
zvonat [6]3 years ago
6 0

Answer:

III) Animals had the ability to resist dehydration.

IV) Animals had lobe-finned fishes as ancestors.

Explanation:

In other to conquer land, the first animal to colonize land had to be able to deal with lack of constant water supply. Some of the early conquerers had remnant parts from an aquatic living.

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1. Digital signals carry less information per second.
DENIUS [597]

Answer:

2. Information can be stored for future recovery.

3. Digital signals can be transmitted over long distances.

Explanation:

This world is moving towards digitalization. The digital signals are able to transmit the data over long distance. This has squeezed the world information and the data are run to distant places within seconds. The information on digital signals can be stored for later use.

5 0
3 years ago
Increases and decreases of the heart rate result from changes in the activity of the _______. A. medulla oblongata B. thalamus C
pantera1 [17]

Option A. Increases and decreases of the heart rate result from changes in the activity of the <u>medulla oblongata</u>

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What is medulla oblongata ?

  • Medulla oblongata, also called medulla, the lowest part of the brain and the lowest portion of the brainstem.
  • The medulla oblongata is connected by the pons to the midbrain and is continuous posteriorly with the spinal cord, with which it merges at the opening (foramen magnum) at the base of the skull.
  • The medulla oblongata plays a critical role in transmitting signals between the spinal cord and the higher parts of the brain and in controlling autonomic activities, such as heartbeat and respiration
  • The medulla is divided into two main parts: the ventral medulla (the frontal portion) and the dorsal medulla (the rear portion; also known as the tegmentum).
  • The ventral medulla contains a pair of triangular structures called pyramids, within which lie the pyramidal tracts.
  • The pyramidal tracts are made up of the corticospinal tract (running from the cerebral cortex to the spinal cord) and the corticobulbar tract (running from the motor cortex of the frontal lobe to the cranial nerves in the brainstem)

To know more about medulla oblongata, refer:

https://brainly.in/question/123107

#SPJ4

7 0
2 years ago
Why water shortages are expected to be such a widespread problem in the future.
Bas_tet [7]
It is true that earth is consist of 70% water. However it is still a problem that in the near future, their might be a water shortage that will happened. This is because now mostly of our water sources are no longer clean. Our water are polluted and when time will come water will be very pricey
5 0
3 years ago
How was wildlife directly affected by Hurricane Katrina ?<br><br> ♥
Stolb23 [73]
Well one way is how  hurricane winds and such can blow birds off course. Another is how when trees fall down that forces animals to relocate.
4 0
3 years ago
The first invertebrates to develop a true nervous system are
Rina8888 [55]

Answer:

Coelenterates are the first invertebrates to develop a true nervous system.

Explanation:

3 0
3 years ago
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