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zhuklara [117]
4 years ago
15

Need help ASAP

Biology
1 answer:
Mumz [18]4 years ago
8 0

Answer:

The theory of Continental Drift suggest that hundreds of years ago all the continents were one big continent called Pangea. Soon these contintents split up created the places that we live today. This theory was introduced  by Alfred Wegener. His colleges thought he was crazy, but later studies proved his impossible theory to be true. By the process of "sea floor spreading" the continents were then ripped apart and drifted to where they are today.

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How many types of reproduction​
Margaret [11]

Answer:

Sèxual and aséxual reproduction.

Explanation:

Depending upon the formation or non-formation of gamets, reproduction is of two types sèxual and aséxual reproduction.

<u>-TheUnknownScientist 72</u>

7 0
3 years ago
Can you identify the ploidy of different structures? drag the terms on the left to the appropriate blanks on the right to comple
Leni [432]

Answer:

1. The gametophyte generation is haploid.

2. The embryo is diploid.

3. The megaspore is haploid.

4. The sporophyte generation is diploid.

Explanation:

1. Gametophyte- The gametophytic generation is the structure which produces gametes in the plant. Since the gametes are haploid, therefore, the gametophyte us considered the haploid.

2. Embryo- The embryo is formed after the fusion of fertilization when zygote develops, therefore, is considered diploid.

3. Megaspore- the big size spore which is formed from by the meiotic division of the megasporocyte, therefore, is considered haploid.

4. Sporophyte- the sporophyte generation develops from the embryo which is diploid therefore is considered diploid.

8 0
3 years ago
É correto afirmar que a presença de lagartas em espigas de milho se deve:
slavikrds [6]

Answer:

C - ao desenvolvimento de ovos depositados por borboletas.

Explanation:

Antes de responder a sua pergunta, eu preciso te explicar que esse não é o servidor brasileiro e sim o servidor dos EUA, você deve ter percebido que toda a linguagem do site esta em inglês. Isso significa que você só deve postar perguntas em português no campo "World Languagens" mesmo que a sua pergunta seja de biologia como essa. Caso você não faça isso, a sua pergunta pdoe ser excluída, sem ser respondida.

As lagartas que surgem nas espigas de milho, são resultado do ciclo de vida da lagarta e refere-se ao momento em que os ovos depositados nas plantas de milho pelas borboletas se chocam, liberando as lagartas, que se desenvolverão e virarão novas borboletas.

É impossivel que um grão e milho vire uma lagarta, ou que o sabubo apodrecido pode gerar lagartas. Além disso, o ´processo de geração espontanea é uma teoria cientifica invalida e que não deve ser considerada.

8 0
3 years ago
A plant may open and close its stomata to prevent excess water loss and maintain _____. adaptability homeostasis negative feedba
Harman [31]

The correct answer is the homeostasis.

A plant may close and open its stomata to prevent excess water loss and maintain homeostasis.

Homeostasis is termed as the tendency of organisms to maintain and automatic regulation of their internal environment to be in a stable condition.

We say that the plant is in stable condition when the fluid balance and body temperature are being kept in to a pre-set limits which include calcium ions, potassium, sodium and PH of extracellular fluid.

The natural resistance which changes the optimal condition brings about homeostasis.

8 0
3 years ago
Read 2 more answers
There are 10 birds are in a tree a hunter shot one.how many birds are left?
Bess [88]
0 because they scatter 

5 0
4 years ago
Read 2 more answers
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