<span>There are two
types of modern wind turbines. In a Verical-axis wind turbines (VAWTs), the
shaft is mounted on a vertical axis perpendicular to the ground. They are
aligned with the wind so there’s no adjustment necessary when the wind
direction changes. It can’t start moving on itself that is why it needs a boost
from its electrical system to get started. It uses wires for support so the
rotor elevation is lower. They are less efficient than HAWTs due to its lower
elevation. Lower elevation means slower wind due to ground interferences. The
other type is Horizontal-axis wind turbines (HAWTs), the shaft s mounted
horizontally parallel to the ground. It is constantly aligned with the wind
using a yaw-adjustment mechanism. This mechanism moves the entire rotor left or
right in small increments. It uses a tower to lift the turbine components to an
optimum elevation for wind speed and take up very little ground space. It is
much more efficient than VAWT. The motion that converts into electricity is the
rotor. The answer is letter D.</span>
Answer:
each place on Earth weather data have been collected
Explanation:
The mathematical modelling is a set of equations that are developed to determine the effect of some phenomena. The environmental phenomena may include something like the rain patterns in the tropics, the temperature changes in the next 10 years, and the wind patterns in the next years. In the weather model, each place on Earth weather data have been collected will be used to see how the trends change over the course of time.
Based on the chart provided:
- Deficiency of vitamin A causes Night blindness
- Deficiency of vitamin C causes scurvy.
- Cereal Z is recommended for the children because of its high vitamin D content.
- 2 servings of cereal Y is required.
<h3>What are vitamins?</h3>
Vitamins are organic food substances required by man man and other animals only in small amounts for normal growth and healthy development.
The main vitamins are vitamins A , B, C, D, E and K.
Deficiency of vitamin A causes Night blindness
Deficiency of vitamin C causes scurvy.
Vitamin D is required for strong bones and teeth.
Cereal Z is recommended for the children because of its high vitamin D content.
From the chart, cereal Y contains 4 mg of vitamin B.
Since, the recommended daily allowance of vitamin B is 8 mg
Cereal Y contains 4 mg of vitamin B.
8/4 servings of cereal Y is required.
Therefore, 2 servings of cereal Y is required.
Learn more about about vitamins at: brainly.com/question/9348916
Answer:
Patau's syndrome
Explanation:
Patau's syndrome is a genetic disorder caused by one additional chromosome 13, and therefore it is an aneuploidy caused by an extra chromosome (i.e., a trisomy). Individuals with Patau's syndrome have 47 chromosomes instead of 46 in some or all their somatic cells. This syndrome seriously affects fetal development, usually resulting in miscarriage, stillbirth or in neonatal death. The incidence of this syndrome is around 1/5,000 births.
