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Daniel [21]
2 years ago
12

Deep scratches have been found in the rocks of South Africa - scratches that can only be made by glaciers (big blocks of ice). W

hat does this say about the climate of South Africa a very long time ago?​
Biology
1 answer:
earnstyle [38]2 years ago
8 0

Answer:

This says that a very long time ago South Africa could have had glaciers and had a cold climate were as now South Africa has a very hot and humid climate.

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What specific spinal nerve branch controls the movement of rectus abdominis
CaHeK987 [17]

Answer:

The correct answer will be-ventral ramus

Explanation:

Rectus abdominis is a skeletal muscle found in the front part of the body which begins from the sternum and ends at the pubic zone.

Rectus abdominis is also known as "Abs" which viewed externally appears to be six, eight or ten in number.

These muscles are innervated by the thoracoabdominal nerves which carry and transmit signals to CNS and to the muscles back. The main spinal nerve which controls the movement of Abs is known as the "ventral ramus".

Thus, ventral ramus is the correct answer.

7 0
3 years ago
True/false
Yuki888 [10]

Answer:

True

Explanation:

The species that went extinct could be a food source for another and that would possibly be detrimental to the chain.

6 0
3 years ago
Which statement describes how pioneer species and climax communities are different?
Lorico [155]

Answer: D). Primary species have large numbers of offsprings, and climax communities contain species that have small numbers of offsprings.

An ecological succession is a process of gradual changes occurs in a biological community with respect to changes in the non-living abiotic factors  (water, air and sunlight) and with respect to time until the ecosystem attains stability. Primary or pioneer species are the species which invade the previously barren and primitive landmass for their survival. These species make the environment suitable for the growth of other species. These grow and develop in the initial stages of succession. These species are simple organisms which reproduce asexually and produces large number of offsprings. Examples are lichen and moss. Lichen grows on the surface of rocks and acids released by them causes withering of rocks into soil which facilitate the growth of mosses and other plants. Climax community develops in an ecosystem after replacing many previously inhabiting species. Climax community develops in the end of the ecological succession. It contains species which are highly complex and uses sexual reproduction for the production of offsprings which are less in number as compared to those produced by pioneer species by asexual reproduction.  

8 0
3 years ago
Read 2 more answers
_____ 1. What are all living things composed of?
damaskus [11]
1 is D
2 is C
3 is A
4 is B
5 is A
6 is D
7 is B
8 is C
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6 0
3 years ago
Read 2 more answers
Which of the following is correct when comparing reactants and products? A. Reactants have more mass than products. B. Products
zzz [600]
C is correct.

Please vote my answer brainliest. thanks!
5 0
3 years ago
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