Answer:
Skin, tears and mucus are part of the first line of defence in fighting infection. They help to protect us against invading pathogens.
Explanation:
can I have brainliest
Answer:
Steric hindrance in the cis orientation causes the chain to take on a more bent shape. Most natural unsaturated fatty acids are in the cis conformation. As can be seen in Figure 2.327, the cis fatty acids have a more of kinked shape, which means they do not pack together as well as the saturated or trans fatty acids
Explanation:
Mitosis results in two daughter cells having the same number and kind of chromosomes.
Answer:
Characteristics that have helped humans survive major changes in the environment are their brains and body. Human's social cooperation with tool making always increases.
The 3rd,4th, and 5th are correct.