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AveGali [126]
3 years ago
14

Bena thinks that dissolving more salt in water causes the mixture’s freezing temperature to change.

Biology
2 answers:
kirill [66]3 years ago
7 0
I think it is A but I am not completely sure
pochemuha3 years ago
6 0

Answer:

The correct answer will be option- an experimental investigation, because it allows for the control of variables.

Explanation:

An experimental investigation is a type of scientific investigation which involves the sequential steps of the scientific method that is from forming a hypothesis and performing controlled experiments including the dependent and independent variables.

Since in the given question, the given statement assumes that adding more salt to water can cause the change in the freezing temperature of the mixture which could be tested only through the experiments.

The experiment is performed in which the amount of salt will be considered independent variable and the freezing temperature would be considered dependent variable.

Since independent variables can be controlled, therefore, the selected option will be the correct answer.

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In which type of human cell(s) would 46 chromosomes be located? Select all that apply.A. diploidB. eggC. somaticD. gameteE. sper
Marrrta [24]

Answer:

A. diploid and C. somatic

Explanation:

Humans are diploid organisms and have 23 pair of chromosomes i.e. in total humans have 46 chromosomes.

There are 2 types of cells in humans (1) somatic cells and (2) germ cells.

Somatic cells are normal body cells which are diploid and have all 23 pairs of chromosomes. But, germ cells are special type of cells which are produced by gonads (sex organs). Germ cells are also known as gametes. In females, ovary is the sex organ which produces germ cells named as egg cells while in males testes is the sex organ which produces germ cells named as sperms. Germ cells (egg and sperm) are haploid cells which fuse to form a zygote which is the first cell of next generation. The process of fusion of egg and sperm is known as fertilization which is responsible for restoring diploidy in the progeny which receives half the genetic material from female parent and half the genetic material from male parent.

6 0
3 years ago
What are some examples of chemical energy.
velikii [3]
Batteries, biomass, petroleum, natural gas, and coal are examples of stored chemical energy
3 0
3 years ago
Read 2 more answers
Determine if this passage is an argument or nonargument: Evolution is central to vertebrate biology because it provides a princi
attashe74 [19]

Answer:

C). Argument; conclusion: Classification,...a method of understanding evolution.

Explanation:

An argument is characterized as 'a series of propositions organized so that the final proposition is a conclusion that is intended to follow logically from the previous propositions.' The given passage exemplifies an argument as it puts forward a claim that can be argued upon if it is true or not and supported through adequate reasoning. <u>The factual evidences are provided to support the validity of the proposition and the conclusion that 'classification initially a process...understanding evolution' is compelled</u>. Thus, <u>option C</u> is the correct answer.

7 0
3 years ago
What is demonstrated as necessary by this experiment for photosynthesis to occur?
zzz [600]

Answer:

Light

Explanation:

This is one of the major factors in photosynthesis.

3 0
3 years ago
If a cell culture has 3 x 105 cells per ml , and the culture flasks hold 75 ml of culture each and you have 12 flasks, how many
natta225 [31]

There are 27 x 10⁷ cells in total for the given conditions of cell culture.

Since it is given that the cell culture contains 3 x 10⁵ cells per ml and there are 12 culture flasks in total. It is also given that each of the culture flask holds 75 ml of culture.

Therefore, to calculate the total capacity of the flasks the total number of flasks should be multiplied with the individual capacity of a flask:-

75 x 12 = 900 ml

Now, in order to calculate the total number of cells in the given culture., the total capacity of the flasks i.e. 900 ml should be multiplied with 3 x 10⁵ cells per ml in the following manner:-

900 x (3 x 10⁵) = 2700 x 10⁵ = 27 x 10⁷ cells

To learn more about cell culture here

brainly.com/question/1005896

#SPJ4

4 0
1 year ago
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