Options for the question have not been given. They are as follows:
type of soil
type of plants
exposure to sunlight
method for measuring the growth
Answer:
exposure to sunlight
Explanation:
A scientific experiment has an experimental group and a control group. Control group is included to omit any error in results due to the factors other than the variable factor. Experimental group is the one exposed to different levels of the variable factor.
Here, Carlo wants to determine the the effect of day length on plants' growth. The test variable here is thus the duration of sunlight. In experimental group, this duration will be changed to determine its effect. In control group it will be kept constant so that results from other factors can be excluded from the observed experimental result.
I agreed with him for 100%
Answer:
C.
Explanation:
Not all victims are in water
Not all victims have hairy chest
Pads ALWAYS NEED to be placed on bare skin
Not all victims have pacemakers
Answer:
B. Mental status
Explanation:
Respiratory diseases are medical conditions that affect the lungs and breathing capacity, but do not alter the child's mental state, so in assessing the child's breathing, it will not be necessary to evaluate breathing work, chest expansion and sounds of the child's breath. It is not necessary to evaluate the mental states to know if the child has breathing problems.
Some breathing problems are genetic while others are caused by lifestyle or environmental factors. Common breathing problems include asthma, bronchitis, emphysema, tuberculosis and sinusitis.
Answer:
The correct answer is: Yes, this is an example of Reproductive Isolation.
Explanation:
- Reproductive Isolation can be defined as the mechanism adopted by different species during the course of their evolution, due to which the individuals belonging to different species are incapable of mating with each other and producing viable offspring.
- The given question is an example of Mechanical, Pre-zygotic Reproductive Isolation.
- Prezygotic Isolation refers to the mechanism adopted by individuals of different species during the course of evolution such that successful fertilisation of gametes from individuals of different species never occur, hence a viable zygote is never formed.
- Mechanical Isolation refers to the mechanism adopted by individuals of different species during the course of evolution such that their reproductive organs or the organs that assist in the process of reproduction are incompatible to each other. Hence, the gametes of each species are unable to come in vicinity of each other.
- Here, the pollen grain from the flower of one species of juniper is unable to form the pollen tube when its sits on the stigma of the flower of another species of juniper. This is an example of Mechanical Isolation.
