1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
il63 [147K]
3 years ago
11

What is the potential disadvantage of external digestion ​

Biology
2 answers:
harina [27]3 years ago
8 0
This dispersal reduces the likelihood that a sperm will find an egg. Many sperm and eggs die before achieving fertilization. The low success rate of external fertilization puts animals at a reproductive disadvantage compared to internal fertilization.
LenKa [72]3 years ago
3 0

Answer:

Select the correct texts in the passage.

Which two details are most important to include in a summary of the excerpt?

excerpt from Robinson Crusoe

by Daniel Defoe

When I waked it was broad day, the weather clear, and the storm abated, so that the sea did not rage and swell as before. But that which

surprised me most was, that the ship was lifted off in the night from the sand where she lay by the swelling of the tide, and was driven up

almost as far as the rock which I at first mentioned, where I had been so bruised by the wave dashing me against it. This being within

about a mile from the shore where I was, and the ship seeming to stand upright still, I wished myself on board, that at least I might save

some necessary things for my use.

When I came down from my apartment in the tree, I looked about me again, and the first thing I found was the boat, which lay, as the wind

and the sea had tossed her up, upon the land, about two miles on my right hand. I walked as far as I could upon the shore to have got to

her, but found a neck or inlet of water between me and the boat which was about half a mile broad; so I came back for the present, being

more intent upon getting at the ship, where I hoped to find something for my present subsistence.

Explanation:

You might be interested in
LO NECESITO URGENTEMENTE, PORFAVOR AYUDENME INSTRUCCIONES: lee el siguiente texto y completa las ideas con las siguientes palabr
Andre45 [30]

Answer:

La reproducción sexual consisten en la unión de dos gametos uno femenino y otro masculino, para formar un nuevo individuo con características provenientes de ambos progenitores. Los gametos son células especializadas que se forman por un proceso meiótico y tienen en su núcleo la mitad de la información genética de un organismo, por lo que reciben el nombre de células haploides de manera que cuando se une sus cromosomas se forman células diploides característico de la especie. La característica más importante de este tipo de reproducción es la variación genética que implica que los descendientes tengan características de sus dos progenitores, por lo que son diferentes a ellos. El proceso en el que se une las células sexuales se le conoce como fecundación. En los animales esta pude ser interna o externa.

Explanation:

Los gametos (óvulos y espermatozoides) son células germinales especializadas que se desarrollan a partir de un proceso llamado gametogénesis (espermatogénesis en machos y ovogénesis en hembras). El proceso de gametogénesis implica un tipo de división celular llamado 'meiosis' donde la cantidad de cromosomas se reduce a la mitad. En humanos, el número cromosómico diploide (2n) de 46 cromosomas se reduce a un número haploide (n) de 23 cromosomas. La fecundación es el proceso por el cual los gametos se fusionan durante la reproducción sexual para producir un cigoto diploide. En la reproducción sexual, el aumento de la variación genética en la progenie es un resultado de tres procesos diferentes: la unión aleatoria entre gametos durante la fecundación, la distribución independiente de los cromosomas durante la gametogénesis y el entrecruzamiento (recombinación o crossing over) entre cromátidas de cromosomas homólogos durante la meiosis. Finalmente, en animales, la fecundación puede ser interna, la cual se produce mediante la unión de los gametos dentro del cuerpo de la hembra (por ejemplo, gallina, leona, cebra, etc.), o fecundación externa, donde la fusión de gametos se produce en el ambiente externo (por ejemplo en peces, sapos, ranas, etc.).

6 0
3 years ago
Males of different species of the fruit fly Drosophila that live in the same parts of the Hawaiian Islands have different elabor
Snowcat [4.5K]

A: habitat isolation

Explanation:

3 0
3 years ago
Which increases the rate of speciation?
Blababa [14]

Answer:

Population bottleneck

Explanation:

Just took the test

4 0
3 years ago
Please help meeeeeeeee
-Dominant- [34]
-Homeostasis:maintains stable internal conditions
-Metabolism:cellular respiration
-Growth:biosynthesis
-Made of cells:mitosis and differentiation
-Responds to changes in environment:plant bending towards light
5 0
3 years ago
If we know the atoms mass in amu and we know the number of protons of the atom, can we calculate the number of neutrons that con
olga nikolaevna [1]
Yes you can. The atomic mass measured from the proteins and neutrons in an atom, since you know he number of protons, you can subtract and be left with the number of neutrons.
5 0
3 years ago
Other questions:
  • What is the vessel that connects the right vesicle to the lungs
    7·1 answer
  • QUESTION 20
    10·1 answer
  • Are weather and climate linked? if yes, how so?
    5·1 answer
  • Which sense uses more cortical space than other senses? (in other words, which sense uses the largest portion of the brain?)?
    14·1 answer
  • Ciri ciri basidimycota
    14·1 answer
  • Please heeeeeelp
    7·1 answer
  • A) Building artificial reefs and limiting fishing activity.
    9·1 answer
  • Select the correct answer.
    12·1 answer
  • I am doing Biology anyone wanna talk?
    15·2 answers
  • Some organisms can become _____ to survive an unsuitable environment.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!