The data given are
melting point density
<span>Zinc 419.53 oC 7.134
Nickel 1455oC 8.912
Copper 1084.62oC 8.96
Silver 961.78oC 10.501
Gold 1064.18oC 19.282
density is the mass per unit volume. Melting point is determined by the intermolecular forces between particles in the solids.
We </span>have been asked to find which cube weighs the most
density = mass/volume
when volume is constant for all the metals, then density is directly proportional to mass. Therefore metal with highest density has the highest mass.
from the given metals, metal with highest density is Gold.
correct answer is Gold.
Saliva
Saliva contains an enzyme called salivary amylase.
Salivary amylase is an enzyme that breaks down complex carbohydrates molecules into simple or smaller carbohydrate molecules called maltose. The enzyme acts on carbohydrates in the mouth, initiating the process of digestion.
Salivary amylase is made by the salivary glands in the mouth. Maltose is later converted to glucose in the small intestine by another type of amylase called pancreatic amylase.
C. Grasslands are used for cropland.
Explanation:
The land use change as human population increase when grasslands are used for cropland to support the thriving population.
One problem with thriving human population is the availability of food.
- To grow more food, new farmlands have to be cleared.
- In areas where Grassland dominates, they must give way to agricultural fields.
- Forests must be cleared for crop growing.
- This leads to loss of natural grassland and replacement by cropland.
learn more:
Population dynamics brainly.com/question/2375366
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