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lesya692 [45]
3 years ago
5

Why did Whittaker propose a five-kingdom system?

Biology
1 answer:
irinina [24]3 years ago
8 0

Answer:

because he trusted no one

Explanation:

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Air is.....
GREYUIT [131]

Answer:

C- homogeneous mixture

Explanation:

its made up of multiple elements that aren't chemically combined.

you cannot see the parts of the mixture

6 0
2 years ago
Lead emissions since the early 1980s have
frez [133]
Lead emission since early 1980s have DECREASE DUE TO LEAD FREE GASOLINE. 
Lead is a natural occurring element that is found in small quantity in rocks and soils. Lead emission is an important environmental health issue because a very small quantity of lead can cause adverse effects on the nervous system of unborn babies and young children. Because of this, the government took all necessary measures to ensure that its emission was drastically reduced.
4 0
3 years ago
What is the powerhouse of the cell
Phoenix [80]

Answer:

Mitochondria

Explanation:

  • Mitochondria are considered as the powerhouse of cell because they perform function cellular respiration process in a cell.
  • Cellular respiration is a process of converting the chemical energy present in nutrients into ATP which gives energy to organisms to carry out movement and physical actions.
  • Mitochondria performs cellular respiration process from which they can release energy present in food and nutrients.
  • Due to those reasons, mitochondria is called as powerhouse of cell.

7 0
3 years ago
Through which blood vessels does oxygenated blood flow to cardiac muscle of the heart?
STatiana [176]
The pulmonary veins
4 0
3 years ago
The pupil is the adjustable opening in the center of the eye through which light enters. transparent structure that focuses ligh
Black_prince [1.1K]

Answer:

1) IRIS

2) LENS

3) RETINA

4) Fovea Centralis

Note: Answers 1 - 4 follows question pattern

Explanation:

The PUPIL is the hole in the MIDDLE of the IRIS of the eye, through which light passes to be focused on the RETINA.

The IRIS is the contractile membrane perforated by the pupil, which adjusts to control the amount of light reaching the retina, and which forms the colored portion of the eye

ACCOMMODATION is the change in the adjustment of the eye lens to help focus light ray.

RETINA helps to receive light rays that the lens has focused. It contains two cells: rods and cones

Fovea Centralis is at the center of the retina responsible for sharp and accurate vision, also it is where cones cells cluster.

7 0
3 years ago
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