Explanation:
A decrease in the biodiversity due to deforestation affects the biosphere significantly.
Forest trees are a huge part of any biodiverse region especially in the tropical areas.
- Arboreal organisms like bats and squirrels will lose their habitat to deforestation in the tropical region. Such organism will find it difficult to survive.
- Fruits and food from certain wide plants species will become unavailable for organisms that depends on them. This is very scathing on lives that depends on them.
- Forest trees acts as wind breaks. In their absence, tropical storms will have more damaging effect on the area.
- Deforestation can lead to desertification.
- Erosion of rich and fertilize nutrients in soil away results from deforestation.
- Reduce level of oxygen in the air because plants produce oxygen as bye product of photosynthesis.
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Answer:
1. DDT (
Dichlorodiphenyltrichloroethane) with molecular formula; C14H9Cl5
2. Lead
Explanation:
1. DDT (Dichlorodiphenyltrichloroethane) is an example of compounds that biomagnifies in the biosphere. DDT is used as pesticides. When DDT is sprayed on plants to kill their pests, part of it is accumulated within the plants.
However, when primary consumers feeds on the affected plants, DDT is passed on to them and then to the secondary consumer in that sequence until it get to the top of the trophic level.
Effects of DDT have been seen in many organisms including birds and humans. The effects seen in humans is quite minimal to that of insects and birds. DDT causes lost of many insects and young birds. In humans, it causes vomiting, seizures etc.
2. Lead: it enters the biosphere by absorption and consumption means. Humans through the use of lead paint, smoking of cigarettes, use of cosmetics and combustion of coal accumulates lead in their bodies. Lead can't be synthesize by human, therefore it accumulates and biomagnify within their systems.
The effects of lead in human include; vomiting, stroke and abdominal pains. In tough scenario, it causes immune system deterioration and cardiovascular diseases.
Answer;
-Gene flow
Explanation;
Microevolution is the changes within a gene pool occurring from generation to generation. Allele frequencies in a population may change due to gene flow, genetic drift, natural selection and mutation.
Gene flow refers to changes in allele frequency that result from migration of individuals between populations. Gene flow has the effect of minimizing the genetic differences between populations.
Answer:
A. More hydrogen ions inside the membrane than outside it
Explanation:
During electron transfer from water molecule to PS II and then through electron transport chain to the PS I pumps the hydrogen ions inside the thylakoid lumen. ATP synthesis is driven by energy of proton concentration gradient that moves the hydrogen ions (protons) from lumen of thylakoid membrane towards the stroma. Hence, ATP synthesis requires presence of more hydrogen ions inside the membrane.
Answer:
semipermeable
Explanation:
semipermeable membrane, such as plasma membrane, only allows only some materials such as oxygen—small material. other <em>stuff</em><em> </em>like starch couldn't get in.
