A) Soil pH is a characteristic that describes the relative acidity or alkalinity of the soil of the Soils are considered acidic below a pH of 5, and very acidic below a pH of 4. Conversely, soils are considered alkaline above a pH of 7.5 and very alkaline above a pH of 8
B) While there's logic in that, dogs don't just love treats, they also love new treats. Most dogs get very excited at the sight of a new treat even if the old one is still their favorite. Keep giving them the old ones as well if they prefer it, but also add a little diversity of a they be grateful
C) the important meeting one whose outcome affects you and your team the after it happens. When you’re overlooked for a meeting it feels bad personally and professionally
D) the long term running changes your vascular system; your heart size grows, the heartbeat rate decreases and your arteries widen. They may get harder with the build up of plaque as the studies indicate, but it's not clear that that's a bad thing

The best and most correct answer among the choices provided by your question is the first choice or letter A. <span>A biological agent that cannot reproduce on its own is a VIRUS.
</span>A virus<span> is a small infectious agent that replicates only inside the living cells of other organisms.
</span>
I hope my answer has come to your help. Thank you for posting your question here in Brainly.
Answer:
Basically, most antibiotic drugs are not effective in controlling bacterial growth. The potency of any antibiotic drugs is a measure of the magnitude of diameter of the bacterial growth . <u>This is because the diameter is the measurement of the bacterial growth around the antibiotic drugs used to control it multiplication, and therefore a measure of how effective it can controls the population</u> Thus a small diameter around the antibiotic agent is a proof that it suppressed the growth effectively and can effectively be used to control the bacteria, While a large diameter is an indication of low effectiveness of the drug.
Based on this analogy, penicillin with wide usage for control of bacteria growth with diameter of 3mm, is the most effective antibiotic drugs.However, Erythromycin which is also widely used control growth with diameter of 5mm or 6mm depending on type of bacterial.
Therefore, the least 3mm diameter presented by penicillin is an indication that , antibiotic drugs are not effective enough, and further research need to be done to control growth of bacteria and therefore its pathogenic effects.
Explanation:
A . sexual reproduction requires two individuals from the same species, a Male and a female
but sexual reproduction refers to the union of a Male and a female