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SVETLANKA909090 [29]
3 years ago
6

1. Assuming that you expect five heads and five tails in ten tosses, how do the results of your tosses compare? How about the re

sults of your partner’s tosses? How close was each set of results to what was expected?
2. Add your results to those of your partner to produce a total of 20 tosses. Assuming that you expect ten heads and ten tails in 20 tosses, how close are these results to what was expected?
3. If you compiled the results for the whole class, what results would you expect?
4.How do the expected results differ from the observed results?
Biology
1 answer:
TEA [102]3 years ago
8 0

Answer: is b

Explanation:

Because I saw other people put it

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Which expression is equivalent to y times y times y times z times z times z times z?
zloy xaker [14]

Answer:

y^3z^4

Explanation:

y\times y \times y \times z \times z \times z \times z= y^3z^4

Hope this helps!

7 0
4 years ago
Read 2 more answers
The thumb is the only saddle joint in the human body. Yes, the thumb is the only saddle joint in the human body.
Luba_88 [7]
No, the trapezium of the wrist is also a saddle joint in our body. 

5 0
3 years ago
Read 2 more answers
Which one of the following is likely to be associated with a loss of genetic diversity in a local population of a species?
Vikentia [17]

No information is available regarding the options of the given question. The answer will contain all the factors that might cause the loss of genetic diversity.

Answer:

Genetic diversity may be defined as the different genetic constitution is present in the population. Mutation, natural selection results in evolution that increases the genetic diversity.

The genetic diversity can be lost in the local population by the different mechanisms. The sudden loss of the genetic diversity can occur through the natural calamity. The introduction of the new allele and its selection through many generation might result in the loss of genes present already in the population. Increase in the homozygosity can also cause the loss of genetic diversity.  

8 0
4 years ago
What does it mean when a covalent bond is polar? How can you tell if a bond is polar or nonpolar?
padilas [110]

Answer:

If the covalent is polar its means that pair of electrons are unequally shared between both atoms.

Through electronegativity difference.

Explanation:

Covalent bond:

It is the bond which is formed by the sharing of electrons between the atoms.

It is weaker than the ionic bond. The both bonded atoms do not completely transfer the electrons but can only shares.

For example:

The bond between the both chlorine atoms Cl₂ is coavlent. Cl:Cl

The bond between the H₂ atoms is covalent. H:H

The covalent bond can be polar or non polar. When it is formed between the atoms of two different elements then electronegativity difference is created. The atom atoms with high electronegativity values attract more strongly the shared pair of electron towards it self and become partial negative while the other became partial positive. Thus bond become polar.

But this is only in case when the electronegativity difference between both atoms is 0.4 are greater. If the difference is less than 0.4 than bond is non polar.

For example:

HCl, H₂O

The polar covalent bond is present in HCl and water because of greater electronegativity difference between hydrogen and chlorine , oxygen and hydrogen.

5 0
3 years ago
Porque los bioelementos y las biomolegulas son importantes para todos los organismos
miss Akunina [59]

Explanation:

Bioelementos

De los más de 100 elementos encontrados en la Tabla periódica, la materia viva está

constituida por unos 70 elementos y solo alrededor de 21, son esenciales para el desarrollo y

conservación de la vida. Estos elementos se llaman bioelementos o elementos biogénicos.

Bioelementos Primarios

Están formados por: C, H, O, N, P y S, los cuales constituyen alrededor

del 96.2% de la materia viva en base seca. Son los componentes

fundamentales de las biomoléculas. Son iimprescindibles para formar:

carbohidratos, lípidos, proteínas y ácidos nucleicos.

Clasificación de

los bioelementos

Bioelementos Secundarios

Grupo comprendido por los iones: Na+

, K+

, Ca2+, Mg2+, Cl-

. Estos

elementos aunque se encuentran en menor proporción que los

primarios, también son indispensables para los seres vivos. En medio

acuoso (solvente presente en células tejidos y órganos), siempre se

encuentran ionizados.

Oligoelementos

Son aquellos bioelementos que se encuentran en los seres vivos en un

porcentaje menor del 0.1%. Algunos, los indispensables, se encuentran

en todos los seres vivos, mientras que otros, variables, solamente los

necesitan algunos organismos. En este grupo se encuentran: Fe, Cu,

Zn, Mn, I, Ni y Co (que aparecen en la mayoría de los organismos) y Si,

F, Cr, Li, B, Mo y Al (sólo están presentes en grupos concretos).

Constituyen menos del 0.1% y son esenciales para desempeñar

procesos bioquímicos y fisiológicos.

4 0
3 years ago
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