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jek_recluse [69]
3 years ago
10

Dinosaurs emerged during what time period? A. Paleozoic Era B. Mesozoic Era C. Proterozoic Eon D. Cenozoic Era

Biology
1 answer:
gayaneshka [121]3 years ago
5 0
<span>Mesozoic Era is the anwser</span>
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An individual who has an xxy combination of sex chromosomes is said to have _____ syndrome.
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The appropriate response is Klinefelter. Klinefelter disorder is a chromosomal condition that influences male physical and psychological advancement. Its signs and side effects differ among influenced people. Klinefelter disorder influences 1 in 500 to 1,000 infant guys. Most variations of Klinefelter disorder are substantially rarer, happening in 1 in 50,000 or fewer infants.
4 0
4 years ago
What two evidences supports the continents were once<br> together?
Bezzdna [24]

Fossil Fuels and Continental drift support the idea that once continents were together.

Explanation:

  • Fossil fuels like plants, animals and rocks are of the identical features were found in the two different continents. For example, identical rocks found in the two sides of the Atlantic ocean, even the mountains in two different continents formed of the identical rocks.
  • The next one is fossils of the seed fern Glossopteris is found across all the southern continents. Hence, there is continental drift happened which caused the separation of continents.

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4 years ago
A laboratory investigation included examining prepared slides of pond water. Single-celled organisms with a nucleus and either c
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A Protista is the answer

7 0
3 years ago
What are the Reproductive Barriers that keep species separate?
stiv31 [10]

Answer:

C. habitat isolation; temporal isolation; behavioral isolation; mechanical isolation; gamete isolation.

Explanation:

Reproductive Barriers may be of any type which includes habitat isolation; temporal isolation; behavioral isolation; mechanical isolation; gamete isolation. All these examples are categorized under prezygotic barriers.

Habitat isolation: It occurs in case of allopatric speciation, initially all the members of a species can mate with each other but later on due to geographic barriers like due to a rift, their habitat separates and they cannot mate with each other and later on they evolve as separate species.

Temporal isolation: In temporal isolation, reproductive barrier is different time/season of breeding like American toads and Fowler's toad both are closely related and have potential to mate but due to different mating season they are unable to mate with each other. American toads mate during summers while Fowler's toad mate during late summers.

Behavioral isolation: When the members of two closely related species behave and respond to different mating behavior, it is known as behavioral isolation. For example breeding calls.

Mechanical isolation: Mechanical isolation occurs because of structural or chemical barriers. For example: when the shape of pollinator does not match with that of flower then the male gametes will not be able to reach to the egg cell.

Gamete isolation: When the gametes are unable to fuse due to any reason like less mobility of sperm in the female reproductive tract.

6 0
4 years ago
Which of the following pairs would reside in the same Genus?
77julia77 [94]

Answer:

A+B

I have to write 20 words to explain it well so, they are part of the same species ander phylum.

6 0
3 years ago
Read 2 more answers
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