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poizon [28]
3 years ago
8

A period in a man’s life, usually during his 70s or 80s, when testosterone decreases, causing a decrease in spermatogenesis, is

called ______________________
Biology
1 answer:
kolezko [41]3 years ago
6 0
Answer: Andropause
I hope it helps
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1) As algas são seres eucariontes, ______________, fotossintetizantes, dotados de ___________, e podem ser _____________ ou mult
kirill115 [55]

Answer:

As algas são organismos que anteriormente eram incluídos no Reino Plantae, porém atualmente pertencem ao Reino Protista, sendo a Ficologia (fico = algas; logia = estudo) o ramo da biologia que estuda esses seres: unicelular ou multicelular (filamentosas), eucariontes, fotossintetizantes e viventes em ambientes de água doce (rios, lagos ou superfícies úmidas) ou salgada (mares e oceanos).

Esses organismos autotróficos, dispostos na superfície oceânica (compondo o fitoplâncton), consomem o gás oxigênio dissolvido na água para a sua respiração e liberam através do processo fotossintético cerca de 70 a 90% do oxigênio contido na atmosfera. Recebendo, portanto, a denominação de pulmão do mundo, diferente do que muitos pensam que seja a Floresta Amazônica.

A reprodução assexuada pode ser tanto por divisão binária, isso nas unicelulares, onde a célula se divide ao meio; quanto por fragmentação, mecanismo de cisão de um segmento no talo nas algas multicelulares. Contudo, algumas espécies multicelulares reproduzem por zoosporia, utilizando-se de células flageladas que se desprendem do talo, locomovendo-se até um local favorável para o desenvolvimento.

Explanation:

sorry im not fluent in brazilian

this should give you an idea for your answer

3 0
3 years ago
Which brain vesicle gives rise to the midbrain and cerebral aqueduct?
Mariana [72]

The mesencephalon gives rise to the midbrain and aqueduct of the midbrian(cerebal aqueduct). Both the prosencephalon and rhombencephalon develops in to the metencephalon and myelencephalon.  The telencephalon develops into the cerebrum and lateral ventricles. The diencephalon forms the thalamus, hypothalamus, and epithalamus. 

5 0
3 years ago
The process that replicates the DNA, and then divides a Prokaryotic cell into two Daughter cells is called _______.
dlinn [17]

Answer:

Binary fission

Explanation:

The cell division process of prokaryotes, called binary fission, is a less complicated and much quicker process than cell division in eukaryotes. Because of the speed of bacterial cell division, populations of bacteria can grow very rapidly.

4 0
3 years ago
In humans if a trait is passed on the X chromosome then the trait is
vovangra [49]

Answer:

c, recesive

Explanation:

x chromosomes are usually recesive

3 0
3 years ago
the natural balance between. pray and predator has been increasingly -----, usually because of the human intervention. a, recogn
Rom4ik [11]

I believe it’s disturbed

7 0
3 years ago
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