Answer:
<h2>Food is scarce year-round</h2>
Explanation:
Ectotherm, called cold-blooded animals, whose regulation of body temperature depends on external sources, such as sunlight or any other environmental source.
Example of Ectotherm are: fishes, amphibians, reptiles, and invertebrates.
Endotherm -called warm-blooded animals; those maintain a constant body temperature independent of the environment.
Example of endotherms ; include the birds and mammals and some fish are also endothermic.
Costs and Benefits of Endothermy
By Increasing the rate of metabolism is especially energy intensive. As a result, endothermic animals typically need more food than ectothermic animals.
Answer:
Number of babies with dominant hemoglobin genotype will be 
Explanation:
Given -
% of babies have SCD which means they have recessive version of hemoglobin
Let the recessive version of hemoglobin be represented by "h" and normal version of hemoglobin be represented by "H"
Babies having SCD will have genotype "hh" i.e homozygous recessive.
As per Hardy Weinberg's equation -
Thus, frequency of allele for recessive version of hemoglobin (h) is
Frequency of allele for normal version of hemoglobin (H) is
Thus, Frequency of population with normal version of hemoglobin i.e HH is equal to
hence, number of babies with dominant hemoglobin genotype will be
The moon covers the sun, during this the earth on which it happpens, the earth is shadowing, untill it is over.
Hypothesis is a proposed explanation which is made on the basis of given experimental data taken as starting point for further investigation. All hypothesis test are conducted in a same manner fiollowing the four main steps:
1. State the hypothesis
2. Formulate an analysis plan
3. Analyzing the data obtained
4. Final step is to analyze the results
There are three types of variables taken in an experiment:
1. Independent variable: light, temperature, humidity
2. Dependent Variable: these depends upon the other variable. changes in the independent variable may cause the dependent variable to change, for example, growth of plant is a dependent variable which depends upon the amount of light(independent variable), the plant receives
3. Controlled Variable: these variable can be controlled and prevented from being change like ty[pe of plant, type of soil
