Answer:
few predatory lacewings exist in the trees now because they were killed by the spray.
Explanation:
The spray that farmers used, as noted, also killed the populations of a predatory lacewing.
Due to this, few predatory lacewing remained that could not fully deal with the scale population.
This in turn led to the multiplication of scale now that their predators had been done away with.
Question 10- a
Question 11- d
Lordosis is considered as the abnormal curvature that forms at the lower and lumbar spine. An easy way to remember this, is that lord mean the equivalent of lumbar.
Answer:
A. Interphase
Explanation:
Interphase is when the DNA is copying itself. It is being prepared for the cell to divide and one of the key parts of mitosis is when the chromosomes duplicate, so to prepare for mitosis, the chromosomes must duplicate during interphase.
Answer:
The correct option is that (Too many greenhouse gases in the atmosphere may block heat from escaping into space and trap too much heat next to the Earth's surface causing global warming).
Explanation:
Increased human activities has caused the continuous release of many toxic and harmful substances into the environment. This has caused varying degrees of environmental pollution.
The increased demand of fossil fuels for generation of energy in industries, deforestation and even farming has lead to increase in the release of greenhouse gases to the atmosphere. Example of greenhouse gases include:
--> carbondioxide
--> methane
--> chlorofluorocarbons
--> nitrous oxide.
These are called greenhouse gases as they have the ability to absorb hear energy emitted from earth surface and reflecting it back to the earth surface. The trapping of this heat increases the earth's atmospheric temperature leading to a weather condition called GLOBAL WARMING. The effect of this weather change includes:
--> higher sea levels,
--> Extreme or severe weather such as storm, floods, drought and heat waves,
--> acidic ocean
-->higher death rates.
