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Neporo4naja [7]
2 years ago
11

What questions do you have about our origins? What clues in nature can we look for to investigate this mystery?

Biology
1 answer:
suter [353]2 years ago
5 0

Answer: Humans first evolved in Africa, and much of human evolution occurred on that continent. The fossils of early humans who lived between 6 and 2 million years ago come entirely from Africa. Most scientists currently recognize some 15 to 20 different species of early humans.

Explanation:

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20) Mark is looking out the window on the commuter
xxTIMURxx [149]

Answer: A. motion parallax

Explanation:

In the phenomenon of motion parallax, objects that are moving at certain speeds across a particular field of vision, would also appear to move at greater speeds if they’re closer to the observer. This remains true even if the object instead of the person is moving

. The phenomenon always arises whether or not the object is moving or that the observer is moving in a manner that is relative to the object’s motion. This is because of the distance the object moves in comparison to the proportion of the observers’ field of view that it traverses. Thus, motion parallax generally describes one’s perception of the position of an object with a three-dimensional space, based on sensing said objects at different positions.

5 0
3 years ago
Some invertebrates combine morphological simplicity with features of great structural or biochemical complexity. Select all corr
skad [1K]

The correct answers are:

Trematodes are acoelomates that have effective defenses against attack by their hosts' immune system.

Trematodes are flatworms, internal parasites known as flukes. Their life cycle is complex: they sexually reproduce in vertebrates and asexual reproduce in mollusks (mostly snail). The body of flukes is covered with tough tegument that defends them form digestive enzymes of host’s intestine.

Cnidarians are diploblasts that produce complex, capsule-like organelles.

Cnidaria are water organisms with simple structure: two layers of epithelium and a jelly substance between them. The cells of Cnidaria-cnidocytes contain capsule with venom substance in it with protective role.

6 0
3 years ago
The general meaning of "corpus" is
nadezda [96]
The general meaning of corpus means body in Latin. For example Habeas Corpus pretty much means "show me the body".
8 0
3 years ago
Fertilizer runoff causes an increase in the dissolved nutrients of the ecosystem shown in the food web below. This causes the nu
IrinaVladis [17]

Answer:

I believe the answer is A because if shrimp eat phytoplankton, and squid eat shrimp this should work. I am not positive but I hope this helps.

8 0
3 years ago
Radiation
Gnesinka [82]
Radiation: is the emission or transmission of energy in the form of waves or particles through space or through a material medium.

Examples: Radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma radiation
8 0
3 years ago
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