Organisms tend to be larger in size at higher trophic levels, but their smaller numbers result in less biomass. biomass is the total mass of organisms at a trophic level.
Answer:
B. presence of oxygen in the atmosphere
Explanation:
I took the same test and got it right
The correct answer is spatula or scoopula.
In the laboratories, microspatulas or spatulas refers to small stainless steel utensils, used for transferring, scraping, or applying powders and paste like chemicals or treatments.
Various brands of spatula are also resistant to bases, acids, solvents, and heat that make them suitable for application with a broad array of the compound. A usual kind would be stainless steel spatulas that are broadly used as they are affordable and sturdy.
Answer:
D) A dihybrid cross involves organisms that are heterozygous for two characters that are being studied, and a monohybrid cross involves organisms that are heterozygous for only one character being studied.
Explanation:
When we do a monohybrid cross, we look at one characteristic at a time. When you do dihybrid cross, you are looking at characteristics.
Monohybrid cross example:
If black fur (B) is dominant over white fur (b) what is the probability of black fur in an offspring between two dogs heterozygous for the trait?
Bb x Bb
B b
B BB Bb
b Bb bb
So the probability of black fur is 75%.
Dihybrid example:
If black fur (B) is dominant over white fur (b) and short hair (S) is dominant over long hair (s) what is the probability of white fur and long hair in an offspring between two dogs heterozygous for both traits?
BbSs x BbSs
BS bS Bs bs
BS BBSS BbSS BBSs BbSs
bS BbSS bbSS BbSs bbSs
Bs BBSs BbSs BBss Bbss
bs BbSs bbSs Bbss bbss
The answer would be 1:16 = 6.25%
Answer:
D. The total energy of a system can increase only if energy enters the system
Explanation:
According to the law of Conservation of Energy, energy can neither be created nor destroyed but can be transformed or converted from one form to the other.
A system has the same energy until there is an addition of energy externally. When energy is added, it will lead to an increment in energy. So, when work is done to the system or the system heated, energy increases.
