Answer:
Temperate grassland biome
Explanation:
The temperate grasslands are referred to the biome which is comprised of vast grasslands, being the most dominant type of vegetation in the United States. There is less amount of plants and trees in this biome, and they have cold winters and hot summers. There occurs comparatively less amount of rainfall in this region that controls the height of this grasslands. The soil here is rich in nutrients that favors the growth of these vast grasslands.
This grasslands are divided into two types, namely-
(1) The Prairies- These are the grasslands that are comprised of tall grasses.
(2) The Steppe- These are the grasslands that are comprised of short grasses.
A. number of pots
B. amount of water
C. amount of phosphate
D. amount of blooms on a plant
Answer: B. amount of water.
Explanation: Controlled variables are those that remain constant in an experiment in order to avoid misconclusion about the relation between the dependent and independent variables.
Dependent variables are those that rely on other variables and independent variables are the ones that the experimenter controls.
In this case dependent variable is the production of blooms because depends on how much phosphate is added, so independent variable is the amount of phosphate.
Control variable is amount of water because it affects the growth and production of plants but when the experimenter use the same amount in both trials is standarizing the effect and making non-relevant to the study.
2. prophase
3. metaphase
4. telophase
Chromosomes attach to spindle fibres by their centromeres during metaphase of mitosis.
Further Explanation:
Interphase is the resting phase or metabolic phase of a cell where it prepares itself for the cell division process. Interphase comprises of sub-phases namely, Gap1 phase, Synthesis phase and Gap2 phase. G1 is the first gap phase where a cell grows larger in size and the cytoplasm volume increases as more organelles are produced. During Synthesis phase, the strands of DNA replicates. G2 is another gap phase in which the cell becomes much larger in size and this phase is followed by mitosis where cell division occurs.
Mitosis or somatic cell division is comprised of four phases which includes prophase, metaphase, anaphase and telophase. A somatic cell divides to give rise to two identical daughter cells where each cell contains exact copy of each chromosomes present in the parent cell. In the prophase, the envelope that covers the nucleus and nucleolus disappears and chromosomes become visible by forming two chromatids attached to centromere.
In the metaphase, chromosomes alignment at the metaphase plate occurs and spindle fibres attach to the centromere. Spindle fibres pull the chromatids away from the metaphase plate towards the opposite poles of the cell during anaphase. In the telophase, nuclear membrane reforms, chromosomes decondense and nuclear membrane reforms around each daughter nuclei. The cytokinesis is the final stage of cell division process where the parent cell is pinched off to result in two daughter cells.
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Answer Details:
Grade: High school
Subject: Biology
Chapter: Cell division
Keywords: Mitosis, prophase, metaphase, anaphase, telophase, interphase, cytokinesis, somatic cell, nucleolus, nucleus, centromere, chromatids, spindle fibres.
B. detect changes in the environment
C. rearrange and synthesize chemical compounds
Which processes will all living organisms use to maintain homeostasis?
(1) A and B, only (3) C and A, only
(2) B and C, only (4) A, B, and C
Blocking would be best used 'by blocking on chicken type'. This means conducting separate trials for different types of chickens while testing the chicken feed because the type of chicken was determined to impact egg production.
In a scientific experiment where the aim is to conclude whether a certain chicken feed leads to higher egg production, blocking would be used to control the variables that might affect the result of the experiment. According to the information given, chicken's water intake is said to have negligible influence on egg production, however, the type of chicken does impact the production quantities.
Therefore, the ideal way to apply blocking to the experiment would be by differentiating the groups of chickens based on their type; this method is referred to as blocking on chicken type. The implication of this is, testing different chicken feeds on different types of chickens separately to ensure the accuracy of the experiment results by eliminating confounding factors.
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