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Nikolay [14]
3 years ago
5

What were the different theories and experiments that helped explain how life on Earth began?

Biology
1 answer:
hjlf3 years ago
5 0

Answer:

Here are seven theories complied by the science daily LiveScience which suggests the origins of Life.

1 Panspermia.

2 Simple Beginnings. ...

3 RNA World. ...

4 Chilly Start. ...

5 Deep-Sea Vents. ...

6 Community Clay. ...

7 Electric Spark. ...

Explanation:

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What traits does the kingdom protists fall under
Anvisha [2.4K]

Answer:What traits does the kingdom protists fall under

Explanation:

All protists are eukaryotic organisms. ...

Most protists are aquatic, others are found in moist and damp environments.

Most are unicellular, however, there are a few multicellular protists such as the giant kelp.

They may be autotrophic or heterotrophic in nature.

8 0
3 years ago
Please help, 20 points!!!
Vladimir79 [104]

Answer:

A houseplant is usually small, and darkly colored, whereas an outdoor plant will usually have a brighter color and will more likely to grow in size. Most plants prefer a temperature of around 76-93 degrees Fahrenheit. Meaning if you like your house to be cool, your plants' growth could be stunted.

5 0
3 years ago
Which of the below features was not used to identify the early Homo distinction from Australopithecines
Jlenok [28]

The correct answer is reduction in tooth size.

The anatomy of the foot and pelvis are the feature of Australopithecus afarensis that is used to definitively classify this species as a hominin.

<h3>Australopithecines</h3>

Australopithecines are an adaptive radiation of early hominins, all of which were to some extent bipedal, had brains that were only slightly larger than those of apes, and had adaptations to a diet that included at least occasionally hard-to-chew items. They have been identified through research on perhaps ten species that lived in central, eastern, and southern Africa between 4.2 million and 1.0 million years ago. Understanding australopithecines is essential to comprehending not only the diversity of early hominins but also the origins of Homo. Our genus Homo probably originated from this radiation, albeit we are unsure from which species.

Learn more about australopithecines here:

brainly.com/question/177662

#SPJ1

6 0
2 years ago
Bundles of axons in the central nervous system are called
Karolina [17]

Answer: Bundles of axons in the central nervous system are called a "tract"

Explanation:

Axons(nerve fiber) consist of long slender projection of neurons or nerve cells that conduct and transmit impulses away from the neuron or nerve cell body. Axons are surrounded by endoneurium layer which contain protein fluid that surround each axon.

Bundles of axon in the CNS is known as tract. We have ascending tracts and descending tracts. The ascending tracts function are to conduct and carry impulses along the spinal cord to the brain while the descending tracts transmit and carry the impulses from the brain to lower regions (downward) of the body. Tracts are identified by their origin (where the bundle start) and also the end/termination of axon bundle.

The largest tracts are fasciculi gracilis and cuneatus which are known as ascending tracts.

7 0
3 years ago
Forms of the Ras protein found in tumors usually cause which of the following events to occur? excessive cell division decreased
Bas_tet [7]

The Ras protein found in tumors usually cause which of the following events to occur excessive cell division.

<h3>How does Ras oncogene contribute to cancer?</h3>

Ras genes codes for proteins that can drive cancer when mutated.

All Ras proteins are GTPases which work as molecular regulators in the cell, controlling signaling pathways and other interactions.

Thus, option "A" is correct.

To learn more about Ras protein click here:

brainly.com/question/14994384

#SPJ1

4 0
2 years ago
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