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WITCHER [35]
3 years ago
7

Fish first appeared: a) after the "Age of the Dinosaurs" during the Mesozoic Era. b) during the Ordovician Period of the Paleozo

ic Era. c) in the Cretaceous Period of the Mesozoic Era. d) when land plants evolved during the Carboniferous Period. e) when amphibians dominated the oceans.
Biology
2 answers:
Sveta_85 [38]3 years ago
6 0

Answer:

C. Fish first appeared when land plants evolved during the Carboniferous period

Explanation:

The age of fish was 410-360 million years ago which was called the Devonian period of the Paleozoic Era. This period immediately followed the Carboniferous Era which is 360-286 million years ago when amphibians dominate the land animals on the planet. Agnathans or jawless fishes are the first backboned fish. These fishes survived by sucking food in through the holes in their head.

Sergeu [11.5K]3 years ago
4 0

Answer:

during the Cambrian Period of the Paleozoic Era.

Explanation:

The Paleozoic is the earliest era (of three) of the Phanerozoic Eon and is composed of six geologic periods: the Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian (in that order from earliest to the latest). Fish first appeared about 530 million years ago during the Cambrian explosion.

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Sunny_sXe [5.5K]

Answer: The correct options that apply to the food web are-

  • Food webs are a group of connected food chains.
  • Arrows in a food web go from the organism that is being eaten to the organism that is eating it.
  • Arrows in a food web represent the flow of energy in a food web.
  • Food webs show all of the eating patterns in an ecosystem.  

A food web is an interconnected network of different food chains representing flow of energy and matter within an ecosystem. The different arrows in a food chain represent organisms being eaten by other organisms, thereby representing flow of energy. It also represents that an animal can consume more than one food type.

 


7 0
3 years ago
Read 2 more answers
Innate immunity________.
labwork [276]

Answer:

The answer is A.

Explanation:

Since only 1 of the options is wrong, i assume you are looking for that one.

Two types of immunity systems, innate immunity and adaptive immunity. Adaptive immunity is formed when it is exposed to a harmful substance, vaccines for example create adaptive immunity.

Innate immunity is present at birth which consists our skin protects us physically, chemical substances in our blood that protect us from bacteria and infections and also our blood cells such as T cells.

Since innate immunity forms one of the first lines of defense in our immune system and is the first to respond to a threat in a few hours down to as little as minutes, it is not slower than adaptive immunity in its response to infections and pathogens.

I hope this answer helps.

4 0
3 years ago
Describe two desert animals and the adaptation that help them survive
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Answer:

Describe two desert animals and the adaptation that help them survive?

Camel and Donkey

Explanation:

Both animals have two different types of stomach that enables them to store water for a very long time and makes them withstand drought

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Which stage is the dominant stage in mosses?
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Answer: diploid generation

Explanation: MORPHOLOGY AND DEVELOPMENT OF THE MOSSES

In vascular plants the dominant stage of this lifecycle is the diploid generation. In mosses, the dominant stage is the haploid generation (the gametophyte). This means that the green, leafy gametophytic tissue is haploid (has only one set of chromosomes). hope this helps. Can u give me brainliest

4 0
2 years ago
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